Opa1612 vs opa1642 reddit review
Opa1612 vs opa1642 reddit review
Opa1612 vs opa1642 reddit review. I'm currently using the OPA1612 and OPA1642 in combo with my phono pre and like the sound. OPA1612 could certainly be used here, but it may be overkill in this application since noise performance of this circuit is likely to be dominated by the noise from the FET input The next op-amp I am planning to try is the OPA1612 but perhaps the DAC is the limiting factor and perhaps the measurements will look very similar to the OPA2134 He talked to me about OPA1611's versus OPA134's as well as the OPA1612's versus OPA2134's. /√Hz Rauschen OPA1612 — SoundPlus™ Audio-Operationsverstärker mit 1,1nV/√Hz The new breed of TI J-Fet opamps offer superior performance to that old soldier the OPA2134. 2 X OPA1642. OPA2209 does reproduce sub bass as deep or deeper than OPA1612 but the latter has a pretty Here’s a great article comparing opa2156 CMO vs opa1612. It appears that the OPA1611/2 have a lower noise Technically speaking, it's really hard to beat opamps like AD797, AD8599, OPA1612, OPA1656, so it might be safer to use one of these over the "exotic" ones, There's no shortage of candidates here, and the new OPA1656 is a great option, but you could also check out: OPA1642, OPA1678, OPA827, and the newer Stage width is reduced compared to stock OPA1612. Figure 4-1 There are many reviews of audio hardware and expert members to help answer your questions. These days the likes of OPA1642 / Verified Member 5 Reviews written 🎧 10 years. OPA1612 is one the most low-noise opamps ever built, so totally recommended for unity-gain stages (LPF or output stage of a DAC, but also I/V stage too). 000015% VS OPA1642 on the standard DMP-A6 Thanks Amir, I was just wondering why the review was taking so long. 8dB vs. Ne5532 After this , with two amplifiers both with lm4562 it was time to check if they sounded identical, and they did. 2. This OPA1642 with JFET input achieves a low noise level of 5. I'll check the OPA2191, thanks for the heads up. PNG (41. Another jfet good sounding opamp in this application to consider is the AD8620. Still, the ADA4627-1 kills them all for sonics, nothing is close. 25 V to ±18 V or (4. 1/f corners: OPA1612 ---- 10 Hz OPA1642 ---- 20 Hz OPA1656 ---- 1 kHz OPA2162 ---- 1 kHz It also looks like the OPA1642 and OPA2162 are not happy driving The OPA1602 and OPA1604 bipolar-input operational amplifiers achieve very low 2. 24. The completely docile op amps are the OPA2604, the OPA627, the OPA2107, the LM4562/LME49720 and the OPA2134. View more . Very nice presentation in the link! later Audient has the best quality/price ratio with similar products and technologies. Report Item. Le burr brown + opa2210 est bien plus musical plus detaille meilleur rythme plus naturels les The LPF and OP amp used are also different (OPA1622 and OPA 2140 vs OPA1612+LMH6643 and OPA1642). The owner then ordered a set of Sparkos Pro SS2590 discrete opamps. It's a VERY good bipolar junction opamp with incredible specs. Michael . OPA1612A OPA1612AID OPA1612 OPA1611 OPA1612AQDRQ1 OPA1662 OPA1632D OPA1662AID OPA1602AID OPA1611AID OPA1652 OPA1642 OPA1632 OPA1612AIDR OPA1641 OPA1602DR OPA1632DG4 OPA1642AID OPA1652AID We would like to show you a description here but the site won’t allow us. - Buckeye buffer stage (OPA1612 OP Amp), allowing for Low/Med/High gain settings via toggle switch on the rear. OPA1612 op amps on DIP 8 adapters - $8 shipped (or buy all of them for $80) I have fourteen of these. All thoughts and experiences with the product are naturally my own. OPA1641, OPA1642, OPA1644 SBOS484D –DECEMBER 2009–REVISED APRIL 2016 OPA164x SoundPlus™ High-Performance, JFET-Input Audio Operational Amplifiers 1 1 Features 1• Superior Sound Quality • True JFET Input Operational Amplifier With Low Input Bias Current • Low Noise: 5. The OPA1641, OPA1642, and OPA1644 rail-to-rail output swing allows increased headroom, making these devices ideal for use in any audio circuit. RPi The speed of the op amp in I/V converter is not critical because the signal, the stair, has small steps, so, it is not necessary large slew-rate. 2V inside the negative rail and 2. Or perhaps it took the lessons learned on the 1612 and applied them during the design of the 1642. Description Specifications Customer Reviews (37) You may also like Description. This packaging style can also be seen in models such as the K9 Pro ESS, K7 BT, and K5 Pro Texas Instruments OPA1612 ระดับ วงจรขยายระบบเสียง มีจำหน่ายที่ Mouser Electronics Mouser ให้บริการสินค้าคงคลัง การประเมินราคา และใบข้อมูลสำหรับ Texas Instruments OPA1612 In 2022 one would suggest OPA1642 and OPA1656 methinks. 1 nV/√Hz at 1 kHz The LPF and OP amp used are also different (OPA1622 and OPA 2140 vs OPA1612+LMH6643 and OPA1642). Hi there probaly a simple question maybe not. 1) base on the circuit in OPA1642's datasheet. The OPA1611 • Wide Supply Range: ±2. Opa1612 ( sounded almost as good as lm4562, very small difference ) 3. The OPA1662 and OPA1664 series of op amps offer rail-to-rail output swing to within 600 mV with 2-kΩ load, which increases headroom and maximizes dynamic range. AD8512's do sound better but they are 8 nv noise vs 5 nv noise for the BB OPA1642. I just noticed something interesting: According to docs submitted to the FCC, the only internal difference between the Standard and Master Edition is the Dual Femto Clocks PCB board. Yes. alongside with some aliexpress el`cheapos for like 2 buck a piece instead of 7. Consider joining r/PlayStation for your daily dose of memes, screenshots, and other casual discussion. 000015% at 1 kHz. • Professional Audio Equipment Both the OPA1611 and OPA1612 are available in Hello everyone, I have the DAC Emotiva XDA-1 preamp with the DAC Analog Devices AD1955 and Burr Brown OPA-2134 op-amps, I want to update to the Burson Audio Play with the DAC: ESS Technology SABRE32 / ESS9018 and NE5532 X 3, NE554 X 2 op-amps, would it be a good update to the Burson Audio? thank you very much to all. 25 V to ±18 V. 6 Electrical Characteristics: VS = ±15 V at TA = 25°C, RL = 2 kΩ, and VCM = VOUT = midsupply, unless otherwise noted PARAMETER TEST CONDITIONS MIN TYP MAX UNIT AUDIO PERFORMANCE THD + N Total harmonic distortion + noise 0. The OPA1602 and OPA1604 series of op amps offer rail-to-rail output swing to within 600mV with 2kΩ load, which increases headroom and maximizes dynamic range. Low THD and Precision OPA1612-Q1 There are many reviews of audio hardware and expert members to help answer your questions. consists of 2 x 10 op-amps in parallel and the two The first time I did test with opa1642 opa2156(precision opamp version of opa1656) opa1612. Some of this review will, therefore, be similar to the K9. A comprehensive comparison between OPA1612 and OPA2156 (and other opamps) could be read here: Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. Now, we run through a hand calculation to find the total noise of a simplified audio system. The NJM4560DX does not appear to be FET type, though I thought a FET type like OPA1642 would suit this circuit? or maybe OPA1612 which isnt FET like the We would like to show you a description here but the site won’t allow us. Their new Pure Multichannel amplifier is just beautiful! From 7 up to 12 channels of Purifi 1ET400A amps, LT3045/LT3094 regulators, OPA1612 or Sonic Imagery 994 opamps. Not harsh at all. Model Number. Technical Expert. When we developed the OPA1656, this was also a major design target for us, and the designer and myself spent quite awhile in the lab with previous CMOS audio op amps (specifically Part Number: OPA1642 Other Parts Discussed in Thread: OPA1612, , OPA1652, OPA1688, OPA1662, OPA1602 Hello, I am looking at replacing the old JRC opamp in my phonostage of my amplifier. Opa1642 4. 5V to ±22V. 5 Euro OP275 ~ 3 Euro OPA1612 ~ 6 Euro According to specs I would think the OPA1642 would be one of the best compromises cost vs performance wise. 000015% VS OPA1642 on the standard DMP-A6 OPA1612, OPA2211, LME49720HA, OPA2111, AD746 (class A), AD8620, Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. 860. When we developed the OPA1656, this was also a major design target for us, and the designer and myself spent quite awhile in the lab with previous CMOS audio op amps (specifically - LMP8672 (probably discontinued) - OPA1612 (which is barely available in SOIC8 at the moment) - ADA4898-2 - OPA1656 (if the circuit around it is right, it performs like opamps which are much more expensive, because of the FET Input stage it doesn't produce so much noise even with higher resistor values on its inputs) - AD8599 ( not a I bought the VTV buffers with Sparkos SS3602 op amps. Isn't the OPA627 a single channel opamp vs the OPA1612 is dual (so you would need two 627s per OEM opamp replacement)? J. The original amp has the OPA1656 and the other has the OPA1642. 1nV/√Hz @ 1 kHz, with distortion of only 0. 1 nV/√Hz at 1 kHz The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications. the best sounding is OPA1612 ,not for driving headphones -low output current drive ,3ma current consumption ---then opa2134 the best all around as preamplifier it can be used at high gain 6-10 times,very good sounding and Musical,good for biassing in class A. diyAudio Community diyAudio Store. The Lounge. For this example, we are using the OPA1656 in a non-inverting configuration with a gain of 40 dB or 100V/V. OP Amp Rolling: the Philips CD753 (aka Marantz CD5000) with MUSES8820 vs OPA1692 vs LME49723 and Others - an article by Paul Hunting on TNT-Audio, Internet HiFi magazine, www. I know one is mono and other is stereo. TL072 fig 28. My phono preamp, bye the way, uses OPA1611/1612 and OPA1641/1642s- amongst others. Parts. 2209 has particularly an amazing resolution and detail level with a Great deal of soundstage depth. You should be able to find single-to-dual DIP8 adapters for mounting 2xAD797 on a I seem to recall that the OPA1642 is newer than the OPA1612. And bias current vs common-mode voltage has a slope that adds distortion (H2) when source impedance isn't super low OPA1642 Datasheet. The supply The pop appears only when power is turned off. The OPA827 for example has superior load drive,much lower distortion and miniscule DC offset. Below is a comparison between OPA1656 and OPA1642. That said, a few people consder Slew rate: 24 V/µs; Gain bandwidth product: 53 MHz; Rail-to-rail output; Wide supply range: ±2. With the lid off, I couldn't hear any significant difference, but that could be due to the layout and use. Both (I believe These are probably among the two highest of the best sounding dual opamps around today. My own conclusions with MUSES: In I/V stage: - MUSES8920 is Here’s a great article comparing opa2156 CMO vs opa1612. The OPA1652 and OPA1654 op amps offer rail-to-rail output swing to within 800 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range. Description: High-Performance, JFET-Input AUDIO OPERATIONAL AMPLIFIERS. e. 1. It was recently re-capped and all new guts put in . Audio, Audio, Audio! Compared to OPA1612 however it's a toss. 699. common mode voltage that I've measured on any op amp. Hotstock app is where it's at comments. ) check out and compare measurements of test reviews from various models in stereophile The next op-amp I am planning to try is the OPA1612 but perhaps the DAC is the limiting Part Number: OPA1656 Other Parts Discussed in Thread: OPA2134, OPA2604 The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. 3V inside of each supply. Perhaps it's a further development. 85 mA (VS = ± 5 V) • Temperature range: –40°C to +85°C 2 Applications In this article, we review the FiiO’s Flagship All-in-One device, the K9 Pro ESS. 0 OPA1642 Dual SoundPlus™ JFET Audio Op-Amp O1642A SOIC-8 Texas Instrume di Tokopedia ∙ Promo Pengguna Baru ∙ Cicilan 0% ∙ Kurir Instan. Additionally the OPA1642 sounds fine to me with the PCM1793 chip. Vivement conseillé ! (0) (0) * Title. ••• I had the chance to gather up a selection of opamps from my parts bin, including BB OPA2604, OPA637, AD823, LME49860, JR4556, Muses8820 and 8920, and compare them against each other along with a Burson V6 Classic (thanks to them for sending me an evaluation). Audio, Audio, ขออนุญาตถามต่อนะครับ sound blaster zxr อัพยังไงดีครับ Single Op-Amps (Differential to Single-Ended Converter) LME49710 Dual Op-Amps (I/V Converter) JRC 2114D ควรอัพเป็นตัวไหนถึงเหมาะครับ ตอนนี้อยากเริ่มเบาๆก่อน ดูไว้ I have an Onix XCD-99 which is basically a Music Hall CD-25. Vendor's Bazaar. Buy AkLIAM Original TI BB OPA1612 OPA1611 Classic Op Amp for DAC Headphone Amplifier at Aliexpress for . Opa1656 has good phase response at high frequency. FiiO uses the Texas Instruments OPA1612 for I/V stag, OPA1642 as LPF, and customized OPA926 for voltage amplification, similar to the configuration on the original M11 player. However default 2134 is already pretty good and well-balanced - well-defined bass, good forwarded mids and non-fatigue highs. You can also try OPA1612 as buffer with OPA2822 for the headphone driver. (probably is). The specs on the opamp are really good, almost as good as the OPA1612 (and better in some ways that will be covered below). of ±2. Joined Nov 21, 2022 Messages 19 Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. Home. The TI THS4061 fet input is very fast, low noise and has a buttload of output current. 3 v caps, Service manaul Mega File Upload - hfe_technics_sl-pg440a_service. Joined Sep 22, The AD opamp is more expensive though than the OPA1612. 9 mA per channel; The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. 5 V to 36 V) on 3. EDIT: an earlier version of this review mentioned that we were changing the I/V op-amp due to misunderstanding of a statement from Topping. To Focusing on a practical, hands-on perspective, George Ntanavaras, details the design and construction of a phono preamplifier for Moving Magnet (MM) cartridges and a Line/Headphone amplifier with two additional inputs and volume control. Last edited: Sep 6, 2023. 18 The LME49860's outstanding CMRR (120dB), PSRR (120dB), and V OS (0. post the replies of Buson Audio There are many reviews of audio hardware and expert members to help answer your questions. com and various reviewers, they have different OP amps (Operational The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications. I see now, there have been other instances of noise reported as well. 00005% @ 1 kHz. It is priced at $429. 5V inside of the positive rail . 9 mA of supply current to accommodate the power-supply constraints of many types of audio products. Another two OPA1612 with plenty of Like its sibling devices, the X5Max places heavy emphasis on its audio performance, which is why it packs some dedicated audio chips -- Yamaha YSS-205X signal processor, Sabre ES9018K2M DAC, exclusive Sabre ES9601 headphone amplifier and OPA1612 amplifier -- as part of its "Hi-Fi 2. nishamn27 Member. Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. 000015%) Upgraded special gold faceplate badging and volume wheel trim; All features from the Standard DMP-A6; Super-flexible connectivity options with support for direct audio 3rd party apps, popular streaming services, and full appliance There are many reviews of audio hardware and expert members to help answer your questions. Joined Sep 10, 2023 Messages 62 Likes 56 Location Facebook Reddit Pinterest Tumblr We would like to show you a description here but the site won’t allow us. You can use almost any good op-amp. This combination will sound slightly more clinical than the OPA2192 being my favorite CMOS opamp and OPA2209 my favorite bipolar alongside OPA1612. Goggle bill d mod carver c-1. Kota Depok Lisu Instrument (5) Spesial Untukmu. tnt-audio. opa1612 is a nice unity gain stable opamp that does reasonably well as a buffer as well as in the VAS, reasonably priced etc. Switching to the OPA1612 and the OPA1642 doesn't appreciably change the measurements of the MC stage. 1M subscribers in the headphones community. Change Location. Member Areas. It made a difference in sound and I'm not gonna deny that. The board self MUTE 5 seconds when the power is turned on to prevent the pop on power-on. The FiiO K9 AKM is presented in the distinctive packaging style that FiiO has been using since 2021. Your message * Send. Frankly, this product has some points in favor but some against it. I've read about the 'Sondigo vs. Following performance figures have been measured in Addon BalOut module: Both opamps are so good that it is difficult to measure differences directly. Design & Build. 001% (1 kHz) <0. You can use opa1612, opa1656, opa2156, opa1642, AD826, LM6172, LM4562, LME49860, LME49720, LT1028, etc, etc, etc OPA1612-Q1: 1Mb / 31P [Old version datasheet] SoundPlus High-Performance, Bipolar-Input Audio Operational Amplifier Burr-Brown (TI) OPA134_071: 403Kb / 14P: High Performance AUDIO OPERATIONAL AMPLIFIERS OPA134: 432Kb / 14P: High Performance AUDIO OPERATIONAL AMPLIFIERS More results. The 23 votes, 24 comments. Not to sure whether its still available, you can register with Brown Burr on the Texas Instrument site and provided you are doing R&D not for military purposes, you can order the OPA1612, OPA1642 on SOIC devices free as SAMPLE for R&D and place them on an adaptor that converts from SOIC to dip 8. not going into high frequency oscillation) are different and just swapping ICs may cause problems -- you Part Number: OPA1642 Other Parts Discussed in Thread: TLE2426, , OPA1656, JFE150, JFE2140, OPA1612, LME49720, OPA891. OPA137 — Single, 36-V, 1-MHz operational amplifier with rail-to-rail input to V+ OPA141 Low Power, Precision Operational Amplifier OPA1612 JFET-Input Audio Op Amps OPA1642 — Dual SoundPlus™ high-performance, Unpopular opinion- If you are talking about measured performance in the audio band, it probably is OPA1612 or LME49720. Go for the opa1612 given the choice. But the NJM353 is FET and probably you'll be better off with the OPA1642 (which still looks superior to OPA2604 and all the rest of the FET things, excepting maybe the ADA4627-1) than with the OPA1612. Packaging & Accessories. The main difference between the K9 and the K9 AKM is the sound. Rp82. They probably used the stock resistors values too, which are too low for the tl072 to work comfortably. Given these characteristics, there is a solid use case for my bedtime music sound profile (which can A comprehensive comparison between OPA1612 and OPA2156 (and other opamps) could be read here: https://quantasylum. the OPA1642 brings it a little closer to Z8 DAC performance, I figure its still a very nice piece of kit for a Manufacturer: Part # Datasheet: Description: Texas Instruments: OPA1642: 742Kb / 22P [Old version datasheet] High-Performance, JFET-Input AUDIO OPERATIONAL AMPLIFIERS OPA1642: 865Kb / 25P [Old version datasheet] High-Perforamnce,JFET-Input AUDIO OPERATIONAL AMPLIFIERS OPA1642: 679Kb / 31P [Old version In places less hospitable to LME49720, OPA1612 has proven to be a very useful opamp for dac I/V and or differential summing. The speed of the op amp in I/V converter is not critical because the signal, the stair, has small steps, so, it is not necessary large slew-rate. Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. The OPA1642, SMT-only, is also a good dual BIFET. This gave me a chance to cant really remember ad815, but plenty of experience with opa1612 and opa1632. 1mV) give the amplifier excellent operational amplifier DC performance. 63 kB, 1236x599 - viewed 542 times. NE5532 is a very good OPA1612 otoh has the best sub bass performance I have heard. the OPA1642 in the STD edition) featuring ultra-low noise and low distortion (1KHz 0. The temperature range is specified from –40°C to +125°C. Joined Feb 22, 2022 Messages 32 Likes 4. If I could also request test of: OPA1642 ~ 2 Euro OPA1656 ~ 2. Furthermore, this OPA features rail-to-rail output switching at OPA1612/2211 has excellent CMRR but PSRR isn't stellar and strictly follows OLG. Not much to say other than these are low noise and distortion and easy to use in DIP 8 sockets. 2 did not play The OPA1641 would be slightly better. It offers exceptional performance in almost any audio application. As mentioned previously the OPA2134 in BIFET is a decent performer. 004% @20KHz The above parameters are insignificant to the audio level variations imposed by substandard audio recordings, room modes and compromised A while ago I compared a FiiO D03K (€20 DAC) vs a Topping E30 II (150€) vs the internal DAC on a Marantz CD-Player. So for a low cost the LM4562 or OPA2134. 5 ±1 mV dVOS/dT Input offset voltage drift VS = ±2. Members Online. Every amp. In terms of measurements, the specs (refer the table I made above) are so close as to be indistinguishable (distortion, crosstalk, SNR etc), but the older X3ii's specs are slightly superior. The OPA1642 has the JFET input stage- thus reducing the input current noise- reduced common mode input distortion and sensitivity to source impedances, and lower standing Switched over to OPA1642 just because of that (that one sounds fine as well). 1 nV/√Hz at 1 kHz The Audiophonics OPA1612 operational amplifier is based on an authentic Texas Instruments 1612 chip. The OPA2156 is a new, high-performance op-amp from TI. Audio, Audio, Audio! Other Parts Discussed in Thread: OPA1678, OPA1611, OPA1602, OPA1642. I can see that a lot of hobby builders tend to use the discrete solution, but I can also see that some of the high-end Op-Amps are hitting distortion and noise figures that i would think is hard to beat like the OPA1612 with its 1. 5 V to ±15 V • Shutdown current: 0. After looking at the "CIRMECH" board the OP linked to above, I can now see why the price is so cheap. Hign-concerned Chemical. Two identical gain 11 amplifiers were tested. This device operates over a very wide supply range of ±2. Djano Member. The xlr input and the trigger are two great additional features, as is the nice and efficient enclosure, however the mono is not true mono, and the 13 db of sinad lost is a bit disappointing, especially given The OPA1622, dual, bipolar-input, SoundPlus™ audio operational amplifier achieves a very low, 2. 5 V to 36 V; Quiescent current: 3. Highs: Gentle, crisp, dry, airy. After working with some OPA1612 on my recent Topping PA5 D01 Module replacement project (at ASR), a friend sent me a few OPA1612 opamps he ordered when they were in stock since i couldnt get them anywhere. But this time it's a bit more interesting. fr and eversolo-netherlands. Log in OPA1642). Facebook Reddit Pinterest Tumblr WhatsApp Email All This Thread Reviews Gear Database Gear for sale Latest Trending. 000015% at 1kHz. A place for discussion, news, reviews and DIY projects related to portable The OPA1611 and OPA1612 offer rail-to-rail output swing to within 600 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range. The OPA1641, OPA1642, and OPA1644 series of operational amplifiers are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions. The amplifier is powered by 2 x 9V batteries for low noise operation. Contact Mouser (USA) (800) 346-6873 | Feedback. Specifications. 1-nV/√ Hz noise density with an ultralow distortion of 0. I only covered the customs fees The OPA1641 would be slightly better. Theme - Light; YYYY-MM-DD / 12-hour clock; The OPA1652 (dual) and OPA1654 (quad) FET-input operational amplifiers achieve a low 4. FiiO OPA1612-Q1 Price, OPA1612-Q1 Stock, Buy OPA1612-Q1 from electronic components distributors. Last edited: 2020-10-05 9:04 pm More options Lets take a look at the NE5532 op-amp, used in audio products everywhere since 1979 and it costs about a $1. Recently I reviewed the Nord Three SE 1ET400A Dual Mono Stereo Amplifier. Even AD797 or OP627 cant The lowest noise opamp serves no purpose, if you have a MOhm feedback network. Those are fine. i expected There are many reviews of audio hardware and expert members to help answer your questions. Check These devices operate over a very wide supply voltage range of ±2. My statements were verified: - OPA1611/1612 are optimized for better distortion than the OPA211 (already pretty good). That unit came with the Sonic Imagery's 990ENH discrete operational amplifier ("opamp") in the buffer stage (pre-amplifier). OPA1632: Noise level: -118 dBV (A OPA1641, OPA1642, OPA1644 SBOS484D –DECEMBER 2009–REVISED APRIL 2016 OPA164x SoundPlus™ High-Performance, JFET-Input Audio Operational Amplifiers 1 1 Features 1• Superior Sound Quality • True JFET Input Operational Amplifier With Low Input Bias Current • Low Noise: 5. Gallery Archive Articles. They require a SOIC-8 to DIP-8 adapter though. It is actually a complementary. Device Information PART NUMBER CHANNEL PACKAGE(1) OPA1655 Single D (SOIC, 8) There are many reviews of audio hardware and expert members to help answer you are whole heartedly welcome to try swapping em. 25 V to ±18 V The dual version features completely independent • Single and Dual Versions Available circuitry for lowest crosstalk and freedom from interactions between channels, even when overdriven 2 Applications or overloaded. So, it is a different design and chip. But more importantly, it's CMOS. 4 Calculating Voltage Noise at the Output. Hi Andrea, Noted on OPA2107 albeit not all review indicate as such but hope OPA1642 is not from "frying pan to fire". Had ordered from Farnell to try since it is not too expensive. It sounds different from the Drop Signature version (I have no idea how the V2 Signature sounds like), in that it's less laid-back, less outright warm, but yet maintains a palatable mid-to-high Yes xrk971 it's a well know fact that the TPA6120 is and has been a very nice sounding CURRENT FEEDBACK op-amp as I noted above in my post. But according to re-sellers like audiophonics. From my humble experience the output stage opamp of the DAC can make a noticeable sound difference Fab . This device also has a high output drive capability of ±30 mA. This op amps offer rail-to-rail output swing to within 200 mV of the power supplies with a 2-kΩ load, which increases headroom and maximizes dynamic range. I tested them at 6kHz and compared with known genuine NE5532, LM4562, JRC4580, TL072. Post #4,997 of 7,388 imran27 100+ Head-Fier. The v5i semi-discrete op-amp in the walnut did have one immediately noteworthy difference. jpg. English. 25 V to ±18 V, on only 3. 25 V to ±18 V or 4. Graph is single supply voltage follower. 1-nV/√Hz and an extremely low distortion level of 0. AudioFans Member. Their distortion is not specified in the audio band. Only registered users can post a review. Member There are many reviews of audio hardware and expert members to help answer your (stock), opa2156, opa1656, opa1612 opa1642 opa2140 etc. •Avoid input values below 4 V to prevent degraded VIO that results in an apparent gain greater than 1. - high levels of DC precision are generally not required by audio customers (audio equipment makers). Share Sep 27, 2015 at 4:42 AM. CUSTOMERS REVIEWS. 25 V to ±18 V ±0. – Slew rate: 72 V/μs – Gain bandwidth product: 180 MHz • Fully differential architecture: – Balanced input and output converts single-ended input to balanced differential output • Wide supply range: ±2. 00 : Crosstalk - 110dB PSRR - 80dB min, typ 100dB Distortion - 0. Find more 44, 200333149 and products. 8Vrms from a sourcethis is perfect for The YUGE advantage of the Ak4499 vs the others’ is a. Part #: OPA1642. This throws another wrinkle into the testing as we all know a louder sample is usually perceived as a more detailed sample. It has a modest power consumption at typically 1. It has to do with the load capacity limitation be under a certain load Today, we review the FiiO M11S which is an Android 10 DAP featuring a dual Sabre DAC, a snapdragon 660 CPU, and 670mW of output power. pdf ••• Hi all, Tried few OPAMPs myself in I/V, LPF, VAS and BUFFER stages with my Essence One DAC/headamp, like: NE5532, LM4562, NJR2114, OPA1602, LME49720, MUSES8820, MUSES8920, OPA2604, OPA1642, OPA2132PA, AD8672, AD8599, MUSES01, MUSES02. OPA1612 with ultra-low noise and low distortion 1KHz 0. i tryed lme49722 opa2134 and opa1612 ,--. For example, Aol for the OPA1656 with a 600 ohm load will have a linear output swing that is 1. For example the OPA1678 has a much higher gain-bandwidth product than TL072 and different output impedance, which means that the criteria for it being stable (i. These devices operate over a very wide supply voltage range of ±2. Just did an A/B with 2 opamp buffers on my Hypex NC500 I too find that the OPA1612 and OPA1642 are fantastic upgrade/replacements in a whole lot of professional and consumer audio gear out there equipped with comparatively Definitely an improvement. The OPA1642 is “one step down” but still very highly rated, and it is JFET-input which should give a low enough DC-offset to be used directly in this kind of application. 2 with DT990 really wrong, DT990 performance has been improved, but H2. 2dB) which allows the amp to be driven to full power output with only 1. Also, I am in talks with Burson Audio over this. 1 MB · Views: 136 test_OPA1642 vs OPA2134. The Best Sounding DUAL opamps. 00006% at 1 kHz. Low THD and Precision OPA1612-Q1 OPA1641, OPA1642, OPA1644 SBOS484D –DECEMBER 2009–REVISED APRIL 2016 OPA164x SoundPlus™ High-Performance, JFET-Input Audio Operational Amplifiers 1 1 Features 1• Superior Sound Quality • True JFET Input Operational Amplifier With Low Input Bias Current • Low Noise: 5. The OPA169x operational amplifiers achieve a new level of performance for low-power amplifiers with a low 4. Forums. 8 bucks for a genuine part. Not going into the crazy youtube reviews. It might require more capacitance in the LPF of the I/V stage to keep it happy Vs the others. This may cause instability in some second-order filter designs. I use the AD8066 as an alternative if/when I get bored of the 1612 quite a lot as it has a darker background and decent low end but it isn't Upgraded OPA1612 op-amp (vs. The OPA1662 (dual) and OPA1664 (quad) series of bipolar-input operational amplifiers achieve a low 3. I was wondering if the OPA2604's could be replace with a dual opamp like the OPA1612 with similar or hopefully better results than the OPA627's By newer I meantnewer, because OPA1612 is a newer design then let's say NE5532 or even LM4562. It has the most stable input capacitance vs. The X3iii has lower peak to peak voltage (single OPA1642-Q1: 679Kb / 31P [Old version datasheet] SoundPlus JFET-Input, Automotive-Grade, Audio Operational Amplifiers OPA1642AID: 764Kb / 21P [Old version datasheet] High-Performance, JFET-Input AUDIO OPERATIONAL AMPLIFIERS More results. Thank you all for your replies. So you do mean to say there is absolutely no difference between opa1656 and opa1612 in actual listening terms ? D. 003% (1 kHz) I’d love to be able to review the AK Junior against it – but unfortunately I don’t have one, and at this stage no interested in buying one just for a The dual version of the OPA1641 is an OPA1642, but I'm confused as I believe that neither the Burson nor the OPA627 are duals. OPA1642 on adapter, make sure to check decoupling and make sure to check for oscillation. Please confirm your currency selection: Mouser Electronics - Electronic Components Distributor. It is louder at the same setting compared to any of the IC designs. Two cases were evalutated – in a The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. 00005% at 1 kHz. Facebook Reddit Pinterest Tumblr We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). The main advantage of using the Stock Hypex buffer (bypassing our gain adjustments) is higher gain (26. It is very airy, the bass and treble regions extension pretty well and overall it has a very neutral lively tonality. Better choices include LME49720, OPA2211, AD8599, OPA1642, AD8512, OPA1612, etc. Español $ USD United States. Now all the folks are using opa2134 op -amps as the replacement. Great for guitar fuzz boxes. 00005% G = 1, f = 1 kHz, VO = 3 VRMS –126 dB IMD Intermodulation distortion G = 1, VO = 3 VRMS vs Muses02. I only covered the customs fees & taxes. 08 @ Mouser). I have also tried opa1642, 1612 and 2134, but they are all slightly inferior to lm4562 soundwise in Aiyima a04. The OPA1642, however, is also LESS expensive ($2. It provides a very low noise density of 1. Hi team, The following two sets of Output Voltage vs. (The TEAC uses an OPA1642 opamp, for The OPA1642 is the best choice that you can make other than incredibly expensive ones that provide very, very, slightly less noise and higher distortion. 5nV/√ Hz noise density with an ultralow distortion of 0. OPA1612 SoundPlus™ Audio Operational Amplifier SOIC-8 Texas Instrument. OPA1656 (CMOS) on an adapter is a winner too. 30dB less) There are many reviews of audio hardware and expert members to help answer However they measure and perform worse than SOTA audio ICs like lme49720, opa1612, opa1656 etc. It's well known that all the rest being about equal, bipolar opamps will sound better (and distort less) than FET input's. Facebook Twitter Reddit Pinterest Tumblr WhatsApp OPA1641, OPA1642, OPA1644 SBOS484D –DECEMBER 2009–REVISED APRIL 2016 OPA164x SoundPlus™ High-Performance, JFET-Input Audio Operational Amplifiers 1 1 Features 1• Superior Sound Quality • True JFET Input Operational Amplifier With Low Input Bias Current • Low Noise: 5. 000015% THD or the OPA1642 if JFET is the way to go. In this article, we review the FiiO’s Flagship All-in-One device, the K9 Pro ESS. The op-amps I had on hand were: OPA-2134 (shipped in the Topping D10) Muse 8820; Muse 8920; LME49720; OPA-1612a (SMD part mounted to through-hole socket) This OPA1642 OPA is mounted on a DIP8 socket, enabling it to be easily connected to a circuit accepting this format. Similar Description - OPA1642: Manufacturer: Part # Datasheet: Description: Texas Instruments Thank you all for your replies. The OPA1611 and OPA1612 offer rail-to-rail output swing to within 600 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range. Rolling opa1642, opa1612, muses8920, 2xopa627bp, lme49720na, opa2134. I swapped these for several different op amps including OPA1612, Burson V6 Vivid, and OPA627. You can use opa1612, opa1656, opa2156, opa1642, AD826, LM6172, LM4562, LME49860, LME49720, LT1028, etc, etc, etc Of the op amps in my collection the massive misbehavers are the OPA1656, the LME49990 and the OPA1612. It’s runs on current not voltage which is interesting and not traditional b. This is making OPA164x more and more favorable. The OPA1612 offers rail-to-rail output swing to within 600 mV with a 2 kΩ load, which increases headroom and maximizes dynamic range. The single of the OPA1612 is the OPA1611. Personally I still like to work with the TL07x if I need a FET input, or otherwise The OPA1642 is the best choice that you can make other than incredibly expensive ones that provide very, very, slightly less noise and higher distortion. Et comparé le tout a un smsl c100 c'est comme si le c100 gommait les aspérités de la musique. Sometimes the company decides to go from two letters to three in the part number and parts get stuck in the middle. 1 nV/√Hz at 1 kHz The OPA1641 would be slightly better. com The OPA1611 and OPA1612 offer rail-to-rail output swing to within 600 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range. I think lmh6643 and opa1656/opa2156 have the lowest distortion at higher frequencies, 6643 probably even lower. 25 V to ±18 V TA = –40°C to +125°C(2) 0. Just check the rails aren't over +/-18V. Additionally, the K9 isolates its audio and power stages to minimize noise along the signal path. Jim Williams Audio Upgrades Facebook X Reddit LinkedIn Post Reply Welcome to the Gearspace Pro Audio Community! The OPA1622 is a slow device compared to the OPA1612/OPA1656. What about the murky world of source impedances between 1-10kOhm where it seems like every audio circuit ends up?! Here there are a number of options: BJT-inputs without bias current cancellation (OPA1622), Super-Beta BJTs (OPA2210), Low voltage noise JFET and CMOS In this review we take a look at the new $499 USD FiiO K9 DAC & AMP with Bluetooth. Disclaimer: This was sent to us as a sample The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. post the replies of Buson Audio No brainer there, JFET and CMOS types. I have a 1988 carver stereo per-amplifier. (for leaded packages at least) can be improved by placing output between +/- VS pins giving smaller loop area for output current I've also seen soic types with common connected feedback pins on both Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email OPA227 has 2 diodes in series , anti-parrallel = 1,2 V pp, maybe PNP like OPA1662 ( has single anti-parrallel diodes) . Single package only, 6 nv noise , 80 v/us slew rate and gobs of open The gain and phase vs frequency plot shows that the phase is almost flat for up to 1 MHz compared to OPA1612 which is inversely proportional to frequency up to 1 kHz and then constant up to 1 MHz. Together, these apparently - LMP8672 (probably discontinued) - OPA1612 (which is barely available in SOIC8 at the moment) - ADA4898-2 - OPA1656 (if the circuit around it is right, it performs like opamps which are much more expensive, because of the FET Input stage it doesn't produce so much noise even with higher resistor values on its inputs) - AD8599 ( not a Opa2210 A mon oreille en lpf de pcm1793 smsl l opa2210 sonne mieux que opa1612 opa1642 opa627 opa1656 lm4562 et muses02. May 2, 2022 #186 wallaceho said: Hi guys, I OPA1612 is decent the only reason I'd use anything else really is that the 1612 tends to be a tiny bit cold/bright and sometimes a touch synthetic otherwise it produces very high quality and quite pleasing results. 0" package. but worse CMRR. The TL072 is a dual opamp. Long-winded question for anybody is what’s the diff between these two groups of op amps that While I heard and reviewed the Drop Signature variant here, I had never had a chance to hear the plain Zen DAC. Datasheet: 764Kb/21P. 85 mA (VS = ± 5 V) • Temperature range: –40°C to +85°C 2 Applications View community ranking In the Top 1% of largest communities on Reddit. ) Logged HB9EVI. Overall, don't OPA1641, OPA1642, OPA1644 SBOS484D –DECEMBER 2009–REVISED APRIL 2016 OPA164x SoundPlus™ High-Performance, JFET-Input Audio Operational Amplifiers 1 1 Features 1• Superior Sound Quality • True JFET Input Operational Amplifier With Low Input Bias Current • Low Noise: 5. Reddit's original DIY Audio subreddit to discuss speaker and amplifier projects of all types, share plans and schematics, and link to interesting projects. 3 2 µV/°C PSRR Power-supply rejection ratio VS = ±2. --lme49722 lme4562 lm4562 opamp maybe modern production 3886 are all above average? the designs seem to take the 'typical' GBW spec as the effective minimum My guesstimate puts the safe with production variation margin local closed loop gain corner as low as 100kHz for LM3886 with a greater than 4:1 range designing for stable extra loop gain from the nice input op amp Don't tell that to your employer when you show a new design for review. 6 mA of supply current per channel. Disclaimer: FiiO sent us the K9 Pro ESS for this review, free of charge. 4 mA per opamp section, which is significantly less than the 5532. All the amplification stages are based on top-quality audio op-amps such as Texas Total Noise of OPA1656 vs OPA1612. Joined Facebook Reddit Pinterest Tumblr WhatsApp I think the problem I'm seeing with the OPA2156, and to a lesser extent the OPA1656 is that the 1/f knee for the noise is much higher than for the OPA1612 and OPA1642. So, parts are not spec'ed for or There are many reviews of audio hardware and expert members to help answer your questions. Not a single store in Tokyo that specialises in Hi Dotneck, thanks for explaining. We are also using filtering as described in Section 1 to limit the BW. The OPA1622 offers extremely-high ac PSRR and CMRR specifications that eliminate noise from power supplies, making the OPA1622 It was a deliberate experiment and I was expecting fakes. For I've decided to change the gain opamp to the venerable OPA1612. 000015% I really like the OPA1642 in the Z8 so if the use of it in the Master vs. And the differences to the cheap FiiO were very subtle. The Forums. Reply reply The Reddit home for PlayStation 5 - your hub PS5 news and discussion. OPA828 / OPA2828 vs OPA627. See the LM4562 vs Part Number: OPA1642 Other Parts Discussed in Thread: OPA1652. 8ma quiescent current per channel - half as much as OPA2134,OPA1656 is the best boise performer now, but there many different purposes with different requirements. opa1642 is actually really good. the two first on the base are I/V (I currently use OPA1612 but will try ADA4896), the middle ones are LPF (I use OPA1612), the single one is the line buffer/output. None. Without scoping the outputs or measuring the DAC there's no 6. I preferred the Sparkos for having the smoothest and most natural treble without loss of detail. L'Opa1692 sonne bien aussi. Shanling H2. OPA627BP vs OPA627 . The single package OPA827 is also good. OPA1611, OPA1612 SBOS450C –JULY 2009–REVISED AUGUST 2014 OPA161x SoundPlus™ High-Performance, Bipolar-Input Audio Operational Amplifiers 1 Features 3 Description The OPA1611 (single) and OPA1612 (dual) bipolar-1• Superior Sound Quality input operational amplifiers achieve very low I talked to a TI/B-B applications engineer today. 1 nV/√Hz at 1 kHz There are many reviews of audio hardware and expert members to help answer your questions rather fun, even if the only op I found to be sounding clearly better than ne5532, was the lm4562 ( the others I tried: opa1642 opa2134 and opa1612 ) Last edited: Oct 2, 2021. The slew rate is higher than for the 5532, at 13 V/μs against 9 V/μs. 8-nV/√ Hz noise density with an ultralow THD+N of –119. When we developed the OPA1656, this was also a major design target for us, and the designer and myself spent quite awhile in the lab with previous CMOS audio op amps (specifically As for the OPA1612 themselves, those are regarded as warm, smooth and natural sounding, exactly what a super-linear silicon like ES9038 PRO really needs. Over this supply range the LME49860 maintains excellent common-mode rejection, power supply rejection, and low input bias current. Are there the OPA1612 in SMSL D6? Thread starter AudioFans; Start date Jan 14, 2023; A. 6 KB · Views: 130 Last edited: Dec 19, 2023. Output Current characteristic curves seem to behave in opposite manners. The OPA1642 for instance has a diff input voltage max to the supplies. If soldering surface mount isn't your thing you can order them presoldered from the brown dog adapter 2. If you really feel the need for something faster, look at ADA4898-2 or ADA4896-2 (+/-5V supplies max). The LME49860 has a wide supply range of ±2. 3 nV/√ Hz noise density with an ultralow distortion of 0. It's best use as an alternative to opa1612 when noise is not a big concern. Package. OPA1642 sucks 1. Dear TI E2E support, Hi there, Our team made a prototype of a phono-stage amplifier (pic. X-fi Prelude' comparison a few threads down and I basically concluded from that the AD8620 might be considered better than the default LM4562. jpg . JoeSVK Member. VOS Input offset voltage VS = ±2. If changing the opamp to this one doesn't make a difference, nothing will. Extensive listening test showed me that the best sounding result was with the lm4562. These There are many reviews of audio hardware and expert members to help answer your questions. Skip to Main Content (800) 346-6873. LME49724: Noise level: -117 dBV (A-weighted), THD+N ratio: at least -109 dB (1 kHz, 2 Vrms), around measurement instrument limits. This here is the V2 version of the Zen DAC. Compared to that review the 60Hz hum is much reduced (c. Aol for the OPA2134 with a 600 ohm load has an output swing that is 2. I'd like something between OPA637 and OPA1642. Manufacturer: Texas Instruments. Is there going to be a sonic difference running dual mono when listening to stereo sources? Is dual mono a "purer sound" aka less crosstalk? Going to be running OPA627BP on LittleDot 1+ using Senny Momentum 2. Last edited: 2020-02 This is a review of the Loxjie D40 which is an integrated dual DAC, MQA decoder, and 1. 00003% at 1kHz. There are many reviews of audio hardware and expert members to help answer your questions. From what I know the OPA1656 is currently the highest-spec audio grade standard opamp that TI offers. N. It’s 4 channels not 2 channels which is pretty cool! I’ll wait until more advanced modders sort out it’s kinks and it’s been on the market for awhile! OPA137 — Single, 36-V, 1-MHz operational amplifier with rail-to-rail input to V+ OPA141 Low Power, Precision Operational Amplifier OPA1612 JFET-Input Audio Op Amps OPA1642 — Dual SoundPlus™ high-performance, Even better, try the OPA1612 (if input current isn't a big problem). It is now corrected above. 99. These devices operate over a very wide supply range of ±2. Last edited by mediatechnology; 30th November 2017 at 11:52 PM. Unfortunately, I cannot use the full sized V5/6 due to space constraint, so V5i is the only option for me. Find out all about its performance, now on Headfonia! T-Shirt Shop US; similar to the K9 Pro ESS, and includes OPA1612 and OPA1602 op-amps. In SMT the OPA1612, rated at 40V absolute maximum, is a very good part. Also the OPA1612 does have the highest quiescent over the other opamps we're talking about it will be the hottest. The new OPA1622 delivers lowest distortion and noise, high linear output current, and low power, enabling the highest performance for professional and I think the problem I'm seeing with the OPA2156, and to a lesser extent the OPA1656 is that the 1/f knee for the noise is much higher than for the OPA1612 and OPA1642. Joined Apr 6, 2018 Messages 11,090 Likes 26,698 Location Alfred, Texas Instruments (TI) introduced the newest addition to the company’s Burr-Brown Audio line, a next generation of the widely adopted OPA1612 audio operational amplifier (op amp). OPA1612+BUF634: OPA1612+LMH6643: OPA1642+LMH6643: S/N (H/O) ≥117 dB (A-Weight) >115 dB (A-Weight) >113 dB (A-Weight) THD+N (H/O) <0. The Tubey, better late than never - I just replaced all NE5532 amps in Benchmark DAC1 with OPA1612 and play it so far for few hours. It can easily replace LM4562, NE5532 or TLE2072 OPAs, for example. Reason: Added link 6 The JFET input devices give their best noise performance at medium impedances, in the range 1 kΩ–10 kΩ. stock F1 was very, very similar to my TEAC HA-250, which is a decent but outdated portable DAC/amp. Engineers apply the knowledge of math & science to design and manufacture maintainable systems used to solve specific problems. OPA Chips – OPA1612 with ultra-low noise and low distortion 1KHz 0. An easy and cheap one to try if you want to see if swapping leads to an audible difference. These devices also have a high output drive capability of ±30 mA. The two-circuit power switch its a simple and good solution, but its difficult to find a small two-circuit switch to fit in the 12mm hold in this small case. The recent swap I did was from opa1656 to opa1612 in the v3. 5-nV/√ Hz noise density with an ultra-low distortion of 0. We would like to show you a description here but the site won’t allow us. It has OPA2604 buffer amps that many have replaced with dual OPA627BP's with good results. 2-nV/√ Hz noise density and distortion of –127 dB at 1 kHz. This OPA provides very good electrical and audio performance. Of course there are a number of other factors to consider, like the ability to drive the input impedance of the following circuitry Searching for info on these on Google only really brings up a few reviews that are worth reading. Normally, that's not newsworthy because higher performing parts are coming out all the time. Personally I prefer LM4562, OPA2228 and OPA1612 over OPA1642 because of the input noise that makes it sound less pristine. OPA1656: High-Performance CMOS Audio Op Amp Mouser offers inventory, pricing, & datasheets for Texas Instruments OPA1612 Series Audio Amplifiers. and better suited to non-inverting buffer duties than the OPA1612/2211 . 4W capable headphone amplifier. Facebook X (Twitter) Reddit Pinterest Tumblr WhatsApp Email Share Link. 2 - Fully Balanced Class A DAC/Amp with AK4490, OPA1612, Bluetooth, and Battery-Powered Operation DT990 in the grade than the Sennheiser HD800S much lower, this combination from the price difference is a bit big, Shan Ling H2. 2 dB at 1 kHz, while driving a 32-Ω load at 100-mW output power. (Normally one would probably point to LM4562 as being the best compromise, but I think the Quiescent Current of 10mA is The OPA1642 is significantly inferior to the OPA1612 in many regards (GPW product, output drive, distortion vs output load, input voltage noise for example). My understand if noise isn’t a problem the opa1656 is great alternative to the opa1612. It costs $849 USD from FiiO, directly. 1/f corners: OPA1612 ---- 10 Hz OPA1642 ---- 20 Hz OPA1656 ---- 1 kHz OPA2162 ---- 1 kHz It also looks like the OPA1642 and OPA2162 are not happy driving Here there are a number of options: BJT-inputs without bias current cancellation (OPA1622), Super-Beta BJTs (OPA2210), Low voltage noise JFET and CMOS (OPA1642, OPA827, OPA828, OPA1656/2156). com/blogs/news/opa2156-hifi-in-cmos. Yes, I know everyone likes to think you need GHz op-amps for I/V. AUDIOPHONICS OPA1612 Dual OPA DIP8 (Unit) - reviews - There is 1 review. Both fet based opamps sounds a little bit more solid in the bass(not Dont make me laugh, if you can't hear the difference 5532 vs OPA1612 than you should not be very concerned about SQ (in your case). I couldn't tell the difference between the Topping and the Marantz's internal DAC. 1nV/sqrt(Hz) and 0. 25 V to ±18 V 0. Actually, the OPA1612 and OPA1688 are available in SO-8, not bad. . AskEngineers is a forum for questions about the technologies, standards, and processes used to design & build these systems, as well as for questions about the engineering profession and its many disciplines. The picture shows my op-amp rolling, I have tried the ne5532, opa1612, lm4562 and opa1642. There is only 2 large capacitors in the power supply 1 x 1000uf 16, and 1 x 2200uf 16v, and 4 x 100uf capacitors of various values and about 4 x 47uf 6. if using it alone its the better choice, but if there is a buffer afterwards to drive the headphones, or you are using them for line out, OPA1611, OPA1612 SBOS450C –JULY 2009–REVISED AUGUST 2014 OPA161x SoundPlus™ High-Performance, Bipolar-Input Audio Operational Amplifiers 1 Features 3 Description The OPA1611 (single) and OPA1612 (dual) bipolar-1• Superior Sound Quality input operational amplifiers achieve very low The output swing for Aol should be considered as it is different between the two devices. it is recommended to be used in portable devices I/V stage because it has a input fet like the opa1612 and the opa1642. this is only If I have to modify something that comes with very old OPAmps. The higher current drive of the OPA2822 would be beneficial. Close to zero DC mv at its output would enable removal of the dreaded electrolytic coupling caps which will definitely lower colouration and If you're looking for an opamp substitution, I'd try OPA1642 to replace OPA2604. Clock System – Accusilion Femtosecond oscillators with noise reduction and improved jitter VS high precision crystal oscillators on the standard DMP-A6 3. Op amps do differ in their distortion profiles. BTW it is a real pity OPA2828 does not exist in SOIC. SIY Grand Contributor. 3 5 µV/V INPUT BIAS CURRENT IB Input bias current VCM = 0 V(3) ±10 ±20 pA IOS Input offset current VCM = 0 V ±10 ±20 There are some things to watch out for when swapping op amps. I no nothing about this. The Audiophonics OPA1612 operational amplifier is based on an authentic Texas Instrument 1612 chip. sxjt joohvmp amkjsz wccte buoltin kdyind uxknlhdy hqsg jzjw cszymku