Opa1612 vs opa1642 forum audiophile. Feb 22, 2016 · “比如30多年前的opa2604、2134，到后来的opa627，以及近几年的opa1612，都是口碑非常好的产品。 ”德州仪器高精度运算放大器产品线市场工程师周颖表示，“去年中国市场上很多主打Hi-Fi的智能手机、智能平板、播放器、智能耳放都采用了OPA1612方案。 Mar 13, 2012 · 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. 1-nV/√ Hz noise density with an ultralow distortion of 0. ••• May 15, 2022 · Site Site Announcements Forum Problems & Feedback Terms and Rules. I jumped at the chance to try one of their opamps with the Little Dot 1+ since I've tried many other opamps (all the usual suspects from Burr Brown, Muses, LMI, etc. It has the most stable input capacitance vs. The OPA1642 is also theoretically the best choice for the unity and x2 stages in the output buffer, although the LME49720 is a very close second. 000015% at 1 kHz. Jun 19, 2021 · The OPA1642 has more open at the high frequency, it is more detail but it noticeable sharp and edgy sound. I no nothing about this. It was recently re-capped and all new guts put in . The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications. These sound great and outshine many of the other modern high performance audio opamps out there today. Output Current characteristic curves seem to behave in opposite manners. 3V inside of each supply. Pin can be left floating or connected to any voltage between (V–) and (V+). For example, Aol for the OPA1656 with a 600 ohm load will have a linear output swing that is 1. Several reference are used on forum. Mar 17, 2019 · I wasn't complaining about the OPA1611 , just as an example of bipolar NPN input opamps , like the OPA1622 , or AD797, NE5532, OPA1692, Anyone know whether the LM4562-LME49710-LME49860 series are PNP input or NPN . We would like to show you a description here but the site won’t allow us. TL072 is not in the same league, I replaced those decades ago already for better performing types. but the difference between opa2604 and LME49720 is much smaller than the difference between these two compared to the original ne5532. Jul 4, 2021 · OPA1642 on adapter, make sure to check decoupling and make sure to check for oscillation. For some reason I refuse to use it as often as I can though, being CMOS. common mode voltage that I've measured on any op amp. Opa2156 sounds a little more "detailed" and a little "grainy" in comparison. I also think that op-amp rolling is 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 ) We would like to show you a description here but the site won’t allow us. Jul 30, 2021 · If I could also request test of: OPA1642 ~ 2 Euro OPA1656 ~ 2. 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 OPA1652 and OPA1688) hunting for sources of input capacitance variation. Mar 17, 2019 · The OPA1641 would be slightly better. Aol The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications. 6k posts. (NOTE: We once owned a recording studio together back in the late 1970's through the early 1980's. My understand if noise isn’t a problem the opa1656 is great alternative to the opa1612. Last edited: 2023-06-06 6:15 am 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. ) He talked to me about OPA1611's versus OPA134's as well as the OPA1612's versus OPA2134's. 7. 5). • audio·phile: a person with love for, affinity towards or obsession with high-quality playback of sound and music. 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. Apr 25, 2024 · The OPA1642 has much lower current noise and better 1/f noise than the OPA1656. Feb 11, 2021 · In that case, OPA1611/OPA1612 are very good bets. r/audiophile is a subreddit for the pursuit of quality audio reproduction of all forms, budgets, and sizes of speakers. The current noise paired with high source impedance translates into additional voltage noise on the input and this gets amplified by the gain in the design. The dual and quad versions feature completely independent circuitry for lowest crosstalk and freedom from interactions between channels, even when overdriven or overloaded. Find parameters, ordering and quality information Oct 2, 2021 · Those amplifiers and the topping d10s are incredibly bargains, and a perfect beginning for audiophile students and such. OPA1612 on paper has lower voltage noise but whether its lower noise in practice depends on the circuit impedances. Nov 26, 2017 · thanks for your tips! i have tested the opa2604 and the LME49720 compared to the ne5532. ) in the past with this great performing yet inexpensive tube-hybrid amp. . 000015% at 1kHz. Chris, when do we decide that questions don’t get an answer? ©2007-2024 Audiophile Style, LLC. Questions and Answers. 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 Mar 14, 2010 · Tubey, better late than never - I just replaced all NE5532 amps in Benchmark DAC1 with OPA1612 and play it so far for few hours. NE5532 is a very good amplifier especially for the price ($0. who builds large PA speaker systems. 1-nV/√Hz as well as an extremely low distortion level of 0. ti. Hi team, The following two sets of Output Voltage vs. It might require more capacitance in the LPF of the I/V stage to keep it happy Vs the others. 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. Nov 30, 2021 · Stability should be considered especially with the wider bandwidth of the OPA1656. OPAs 1642 and 1656 MUCH MUCH better. Jul 5, 2006 · Hi All, Please advise what would be the best bet for a modern replacement of the NJM353 in my 12-15 years old vintage 4X60W Class A Zero Feedback car amplifier? Tried dual OPA627AU on adaptor but the sound is of reduced volume, of loss details and PCB is warmer than before and the noob in me did not realized the input current of 7mA X 2 or 14mA for the each of 4 dual adaptor as compared to 1 10 100 1000 1 10 100 1k 10k 100k 1M 10M 9ROWDJH1RLVH6SHFWUDO'HQVLW\ Q9 ¥+] Frequency (Hz) C006 Product Folder Sample & Buy Technical Documents Tools & Software Aug 1, 2024 · The TL072 H does show a faster slew rate than before (now 20, was 13) but the same poor voltage noise and the same inability to effectively drive anything below 10KΩ. It offers exceptional performance in almost any audio application. IMHO the outcome was mostly decided by how the opamps responded to the RF coming out of the dac chip. Mar 17, 2019 · Low output current would mean the transimpedance gain of the I/V circuit will be high, and the input current noise of the op amp will be a significant contributor. 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. May 23, 2018 · Opa1642 sounds a bit smoother and silky at top end but a little bit fat in the mids. Jun 18, 2019 · 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. This feature, in combination I read on several forum the advantage to use specific AOP for the final stage of DAC or Amplifier. Now all the folks are using opa2134 op -amps as the replacement. Hi there probaly a simple question maybe not. 为增加其声音的胆味和醇厚绵密的味道，输出端还特别增加了一枚ti新构架的场效应jfet音频专用的发烧运放opa1642，该运放的信噪比极高，毫无底噪！一点都没有！非常的好！喜欢夜里听的人必须的！ Mar 17, 2019 · We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). the ne5532 looks a bit harder, narrower and more direct, the other two a bit more relaxed and Part Number: OPA1642 Other Parts Discussed in Thread: OPA1612, , OPA1652, OPA1688, OPA1662, OPA1602. Our primary goal is insightful discussion of home audio equipment, sources, music, and concepts. The OPA1641, OPA1642, and OPA1644 rail-to-rail output swing allows increased headroom, making these devices ideal for use in any audio circuit. Marketplace. OPA1656 sounded worst, Muses 8920 sounded best. Mar 22, 2022 · OPA1612 (soic on dil adapter board), bi-polar from input to output, again a very good opamp, which to me "sounds more balanced" top to bottom than the LME, it is just as dynamic, but just a little less obvious in the bass leading edge because the mid-range seems a little more fleshed out rich and full bodied, highs are just as good as the LME. For the case of Jan 5, 2019 · Other Parts Discussed in Thread: OPA1642, OPA1622. com The TI OPA1612 dual operational amplifier benefits from excellent technical characteristics, allowing very good electrical and audio performance. May 9, 2023 · Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. Dec 10, 2015 · A fair question! And although I was the product definer and systems lead for this part, I don't get 100% control over the marketing folks But, I can honestly say that when we started working on this part about a year ago, I was very adamant that I didn't want to create a part with excellent specs but terrible sound quality in the real world. Every amp. OPA1612 is fuller sounding - especially lower midrange but also more dynamic. Jun 7, 2016 · Introduction and Background Burson contacted me about reviewing one of their opamps since I owned a Little Dot 1+. If they don't sound good in that application, I would look for problems in the implementation around them before going to other opamps. Opa1612 is generally slightly light weighted but very balanced otherwise. Jun 5, 2023 · The OPA1642 is significantly inferior to the OPA1612 in many regards (GPW product, output drive, distortion vs output load, input voltage noise for example). A true FET input stage is incorporated to provide excellent sound quality and speed for exceptional audio performance. Mar 9, 2023 · SMSL SU-10 vs M500 MKIII vs DO300 21 vs 9 vs 11 dual op-amps OPA1612 (accoring to the spec from smsl-audio) What is the Op-amps doing in that? M500 SINAD is higher than DO300 with less op-amps. Two identical gain 11 amplifiers were tested. the differences aren't huge, but big enough to make a change worthwhile. THD+Noise vs Frequency 3 Description The OPA134, OPA2134, and OPA4134 (OPAx134) series are ultra-low distortion, low-noise operational amplifiers fully specified for audio applications. The amp OPA1612 VS MUSE02 ทั้งคู่เป็น BiPolar เหมือนกัน เสียงต่างกันไม่มากนัก OPA1612 Mar 22, 2023 · OPA1612到了后，自己先试了试OPA1612+JRC5532，感觉和OPA1642+JRC5532没什么区别，我试了好些碟，也试不出来什么区别；三频几乎没有差别，打分还是一样的，90分水平； OPA1612+OPA1612，这个组合的高频给我非常好的感受，比OPA1642+JRC5532明显更细腻一点，高频的线条感更好 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. 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 OPA828, or also OPA2810. com SBOS450C –JULY 2009–REVISED AUGUST 2014 5 Pin Configuration and Functions D Package OPA1611, SOIC-8 D Package (Top View) OPA1612, SOIC-8 (Top View) DRG Package OPA1612, SON-8 (Top View) (1) NC denotes no internal connection. I suggest the following reference - 994Enh Discret OpAmp SONIC IMAGERY LABS - SPARKOS LABS SS3606 - AOP 1612 - LM4562 . Transients are stronger, both rimshots of snare drum and big-band trumpets. tnt-audio. May 3, 2022 · Its not immediately clear what would upgrade NJM4580 which is already quite low noise. I don't care about listening tests or something else, just want to use the technical better one in my amp. When I do serious listening test between them, just an A - B testing, not back and forth, I found the OPA1642 creates more noise at upper frequency because of those high frequency details. Both (I believe have Fet-inputs) There’s also 2189 CMOS audio op amp has impressive specs of an impressive was designed for MUX friendly DACs and multichannel dacs! OPA1611, OPA1612 www. TI’s OPA1662 is a Dual SoundPlus™ low noise (3. Without scoping the outputs or measuring the DAC there's no telling if Jul 25, 2016 · MASH covers a few different number of bits in the output - the DAC output could just be switches if 802 is LM833, its bjt input isn't suited to the circuit filter/feedback impedances - really should be a jfet type OPA1642 looks good on paper, better when you read the chatter from TI engineer on the project I would worry that there simply isn't The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. 0" package Feb 11, 2021 · 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. Anyway, OPA2134 is pleasure sounding Op-Amp. It is more open sounding and clearer sound from OPA1612 then OPA2134. 大家好。我使用OPA1642+OPA1622搭建了一个简单耳放电路，OPA1642接电流输出型dac作IV转换，OPA1622作差分运放接耳机负载。我发现音频段内所有频率都会有很大的失真，不知道问题出在哪里，还请工程师帮忙看一下。 OPA1642 IV电路. TL074 is easily surpassed by OPA1644, that's a no-brainer. Dec 11, 2019 · It's a killer OpAmp, and better suited to non-inverting buffer duties than the OPA1612/2211 Low- and Mid-Frequency Test Signals for Evaluation of Room Modes // Measurements: ESS Hump revisited // Humpify -- apply "ESS hump"-style distortions to audio files Mar 7, 2019 · Previously i used OPA2134 Op-Amps in my DIY project and CD/DVD modification and after abou year ago i start to use OPA1612. Feb 11, 2021 · I'll look at it if you know of one amp using OPA1612 sounding audibly better than another amp using cheaper op amp in objective listening comparison. 3nV/rtHz) and distortion (-124dB), wide bandwidth (22MHz) audio op amp. OPA1656 (CMOS) on an adapter is a winner too. For high source impedance sensors such as a phono cartridge lower current noise is better. It could be very interesting to test their performance: - SNR - Bandwish - slew rate-. It appears that the I'm with Jim here. But $40-57 each. Feb 17, 2023 · The OPA1622 is a slow device compared to the OPA1612/OPA1656. The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. The output swing for Aol should be considered as it is different between the two devices. Feb 11, 2021 · Below is a comparison between OPA1656 and OPA1642. Dec 6, 2018 · Tone controls? DAC reconstruction filter? The better FET-input op-amps are expensive because they are laser-trimmed and prices can be crazy. Jun 5, 2023 · Although specifications of OPA1612 (bipolar) indicate they are superior to that of OPA1642 (JFET inputs) in practice OPA1642 performs slightly better. Is the 2134 the right choice. Strange but found too many times to ignore it. Hello, I am looking at replacing the old JRC opamp in my phonostage of my amplifier. I have a 1988 carver stereo per-amplifier. I like the OPA1642 due to its MUCH reduced bandwidth compared to the 1656 (11MHz vs, 55 Forums Equipment. 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 current going for Part Number: OPA1642 Other Parts Discussed in Thread: OPA1652. Tested a lot of OP, including LME49720, OPA1612, OPA1642, MUSES8920 and MUSES8820. For OPA1642, the output current (limit) appears to increase with increasing temperature. 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 600 ohms, but the Jul 4, 2009 · Here’s a great article comparing opa2156 CMO vs opa1612. Goggle bill d mod carver c-1. Dec 9, 2019 · Home: RME ADI-2 Pro FS R BE—Neumann KH80 DSP, Arendal Sound 1723 1S Work from Home: JDS Labs Atom—Etymotic ER4SR, AKG K371, Sennheiser HD820 Measurement: Earthworks M30 (Reed R8090)—Earthworks ZDT 1021 — RME ADI-2 Pro FS R BE — REW The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications. It ensures a very low noise density of 1. 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 outdated opamps. Also the OPA1612 does have the highest quiescent over the other opamps we're talking about it will be the hottest. I would recommend OPA2134 or OPA134 and if you have money the OPA627 or OPA637. consists of 2 x 10 op-amps in parallel and the two 10s are balance connected. Jan 10, 2016 · I talked yesterday to my buddy Greg B. TSC The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications. I mean, why assume the opamp is the problem? Aug 3, 2019 · 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. zhidh ntx yeainor hgt tgxtxcd nfuly btawr pqu jppmcr kyowdq