Opa1612 vs opa1642 forum reddit. ah so much other untested opa's 1678 still on my list ina1620. The higher current drive of the OPA2822 would be beneficial. 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 We would like to show you a description here but the site won’t allow us. Without scoping the outputs or measuring the DAC there's no telling if The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications. OPA1612 on paper has lower voltage noise but whether its lower noise in practice depends on the circuit impedances. 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 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). ••• I've been using mostly LM4562, except when I need a JFET opamp (high impedance inputs for example). The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications. LME49720 sound is boringand too light. 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! Feb 4, 2014 · In places less hospitable to LME49720, OPA1612 has proven to be a very useful opamp for dac I/V and or differential summing. May 23, 2018 · Opa1642 sounds a bit smoother and silky at top end but a little bit fat in the mids. However, there really will be very little difference between it and other high performance opamps. NE5532 is a very good amplifier especially for the price ($0. TI’s OPA1662 is a Dual SoundPlus™ low noise (3. Jul 30, 2021 · If I could also request test of: OPA1642 ~ 2 Euro OPA1656 ~ 2. These sound great and outshine many of the other modern high performance audio opamps out there today. Opa2156 sounds a little more "detailed" and a little "grainy" in comparison. 3nV/rtHz) and distortion (-124dB), wide bandwidth (22MHz) audio op amp. TL074 is easily surpassed by OPA1644, that's a no-brainer. May 9, 2023 · Hello together, i want to put one of the mentioned OP Amps in my amp. Aol The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications. Find parameters, ordering and quality information Aug 24, 2012 · i tryed lme49722 opa2134 and opa1612 ,--. Every amp. but the difference between opa2604 and LME49720 is much smaller than the difference between these two compared to the original ne5532. 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. May 19, 2004 · If you're looking for an opamp substitution, I'd try OPA1642 to replace OPA2604. 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. OPA1612 is fuller sounding - especially lower midrange but also more dynamic. 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. --lme49722 lme4562 lm4562 opamp is very good sound ,higher ratings than opa2134 -but not as Jan 6, 2010 · I have an Onix XCD-99 which is basically a Music Hall CD-25. You can also try OPA1612 as buffer with OPA2822 for the headphone driver. Nov 30, 2021 · Stability should be considered especially with the wider bandwidth of the OPA1656. Feb 11, 2021 · I agree about the OPA1612 for gain. 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 OPA1611, OPA1612 www. Mar 17, 2019 · The OPA1641 would be slightly better. 000015% at 1kHz. Jun 5, 2023 · Although specifications of OPA1612 (bipolar) indicate they are superior to that of OPA1642 (JFET inputs) in practice OPA1642 performs slightly better. 5). 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. 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. The amplifier is powered by 2 x 9V batteries for low noise operation. Any futher recommendations? my favs 1642/1656, 1612, lme49720na 2xopa627bp, ••• Part Number: OPA1642 Other Parts Discussed in Thread: OPA1652. My favorites at the moment opa1642 and this one opa1656. Output Current characteristic curves seem to behave in opposite manners. OPA1612, OPA2132. The OPA1641, OPA1642, and OPA1644 rail-to-rail output swing allows increased headroom, making these devices ideal for use in any audio circuit. the differences aren't huge, but big enough to make a change worthwhile. the ne5532 looks a bit harder, narrower and more direct, the other two a bit more relaxed and We would like to show you a description here but the site won’t allow us. 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. It has the most stable input capacitance vs. Hi team, The following two sets of Output Voltage vs. It outperforms most other opamps, very low noise & distortion, doesn't color the sound whatsoever. For OPA1642, the output current (limit) appears to increase with increasing temperature. This combination will sound slightly more clinical than the OPA2228/OPA2822 combination. 1-nV/√ Hz noise density with an ultralow distortion of 0. Last OPA1612 for bipolar input OPA1642 for jfet input 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. 004% @20KHz The above parameters are insignificant to the audio level variations imposed by substandard audio recordings, room modes and compromised loudspeaker placements in the average home, some of these variations could 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。 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 Jan 19, 2023 · - 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 very fast opamp but therefore it is easy to get it stable . Two identical gain 11 amplifiers were tested. OPA1656 sounded worst, Muses 8920 sounded best. Jul 4, 2021 · OPA1642 on adapter, make sure to check decoupling and make sure to check for oscillation. 00 : Crosstalk - 110dB PSRR - 80dB min, typ 100dB Distortion - 0. For the case of The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. It has OPA2604 buffer amps that many have replaced with dual OPA627BP's with good results. Feb 11, 2021 · As Mark pointed out OPA1612 is a terrific sounding opamp and if you have problems with its bold mighty extreme low bass performance or with the extreme high resolution and unfiltered highs you can use other new opamps with a more gentle sound like OPA2209, OPA2189 etc. BTW, last year I crippled my €4. The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. Thread starter oldphaser; Start date Jan 10 Facebook Twitter Reddit Pinterest Tumblr 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. IMHO the outcome was mostly decided by how the opamps responded to the RF coming out of the dac chip. Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. Thanks in 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? Facebook Reddit Part Number: OPA1642 Other Parts Discussed in Thread: OPA1612, , OPA1652, OPA1688, OPA1662, OPA1602. Last edited: 2023-06-06 6:15 am Apr 25, 2024 · Part Number: OPA1642 Other Parts Discussed in Thread: TLE2426, , OPA1656, JFE150, JFE2140, OPA1612, LME49720, OPA891. Nov 26, 2017 · thanks for your tips! i have tested the opa2604 and the LME49720 compared to the ne5532. The dual and quad versions feature completely independent circuitry for lowest crosstalk and freedom from interactions between channels, even when overdriven or overloaded. Jun 19, 2021 · The OPA1642 has more open at the high frequency, it is more detail but it noticeable sharp and edgy sound. Jan 5, 2019 · Other Parts Discussed in Thread: OPA1642, OPA1622. 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 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！ 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. Feb 11, 2021 · Below is a comparison between OPA1656 and OPA1642. 000015% at 1 kHz. TL072 is not in the same league, I replaced those decades ago already for better performing types. 1 nV/√Hz noise density with an ultra-low distortion of 0. It offers exceptional performance in almost any audio application. ti. 3V inside of each supply. May 26, 2020 · 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. The output swing for Aol should be considered as it is different between the two devices. The TI OPA1612 dual operational amplifier benefits from excellent technical characteristics, allowing very good electrical and audio performance. I must test muses now. It is more open sounding and clearer sound from OPA1612 then OPA2134. 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. My understand if noise isn’t a problem the opa1656 is great alternative to the opa1612. For some reason I refuse to use it as often as I can though, being CMOS. Dear TI E2E support, Hi there, Our team made a prototype of a phono-stage amplifier (pic. ••• • audio·phile: a person with love for, affinity towards or obsession with high-quality playback of sound and music. Strange but found too many times to ignore it. Pin can be left floating or connected to any voltage between (V–) and (V+). 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. common mode voltage that I've measured on any op amp. Phoenix DIY Central! OPA1611 vs OPA134 or OPA1612 vs OPA2134. Oct 15, 2014 · Texas Instruments' OPA1612 (dual) bipolar-input operational amplifier achieves very low 1. Also the OPA1612 does have the highest quiescent over the other opamps we're talking about it will be the hottest. Transients are stronger, both rimshots of snare drum and big-band trumpets. 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. 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 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. r/audiophile is a subreddit for the pursuit of quality audio reproduction of all forms, budgets, and sizes of speakers. Mar 17, 2019 · We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). 000015% THD or the OPA1642 if JFET is the way to go. Sound is more "color", and "massive". TSC Jul 5, 2006 · Personally I prefer LM4562, OPA2228 and OPA1612 over OPA1642 because of the input noise that makes it sound less pristine. Part Number: OPA2134 Other Parts Discussed in Thread: OPA1678 , OPA1611 , OPA1602 , OPA1642 Hi there probaly a simple question maybe not. 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. It ensures a very low noise density of 1. consists of 2 x 10 op-amps in parallel and the two 10s are balance connected. 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 The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications. I would tend to use the OPA1642 for buffering, filtering and EQ. May 15, 2022 · Now i tested opa1612 with lme49720 and 1612 is better in my opinion. OPA1656 (CMOS) on an adapter is a winner too. Jul 4, 2009 · Here’s a great article comparing opa2156 CMO vs opa1612. 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. The OPA1612 offers rail-to-rail output swing to within 600 mV with a 2 kΩ load, which increases headroom and maximizes dynamic range. Just check the rails aren't over +/-18V. For example, Aol for the OPA1656 with a 600 ohm load will have a linear output swing that is 1. 1nV/sqrt(Hz) and 0. I don't care about listening tests or something else, just want to use the technical better one in my amp. May 6, 2022 · Lets take a look at the NE5532 op-amp, used in audio products everywhere since 1979 and it costs about a $1. . 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. Hello, I am looking at replacing the old JRC opamp in my phonostage of my amplifier. But I really like the FET's in that position. Jul 5, 2006 · Site Site Announcements Forum Problems & Feedback Terms and Rules. 000 (DIY!) tube preamp with tube Feb 17, 2023 · The OPA1622 is a slow device compared to the OPA1612/OPA1656. Last edited: 2020-10-05 9:04 pm More options Mar 17, 2019 · Rolling opa1642, opa1612, muses8920, 2xopa627bp, lme49720na, opa2134. I have a 1988 carver stereo TI E2E support forums 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. 1) base on the circuit in OPA1642's datasheet. Jan 10, 2016 · Forums. 1-nV/√Hz as well as an extremely low distortion level of 0. JFET inputs let you work with a larger range of input resistors. Opa1612 is generally slightly light weighted but very balanced otherwise. 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 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 . Anyway, OPA2134 is pleasure sounding Op-Amp. Oct 10, 2020 · I have also tried opa1642, 1612 and 2134, but they are all slightly inferior to lm4562 soundwise in Aiyima a04. May 3, 2022 · Its not immediately clear what would upgrade NJM4580 which is already quite low noise. 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. 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. It might require more capacitance in the LPF of the I/V stage to keep it happy Vs the others. zpxjx pqr leg zxwzlxg wmkixsg fxxxcffxw qmbih ipya gcsff hbebe