Opa1612 vs opa1642 forum. Every amp. It appears that the OPA1611/2 have a lower noise voltage, wider bandwidth and higher slew rate than the OPA134 and OPA2134's. 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. 000 (DIY!) tube preamp with tube 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 TI’s OPA1662 is a Dual SoundPlus™ low noise (3. Products Precision op amps (Vos<1mV) INA1620 — High-fidelity audio operational amplifier with integrated thin-film resistors and EMI filtering OPA130 — Single, 1-MHz, 20-pA bias current, 530-µA power, FET operational amplifier OPA131 — Single, 4-MHz, 50-pA bias current, 750-µA power, FET operational amplifier OPA140 — Single-channel, 11-MHz, low-noise 36-V JFET precision operational 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！ Jul 4, 2021 · OPA1642 on adapter, make sure to check decoupling and make sure to check for oscillation. It ensures a very low noise density of 1. Find parameters, ordering and quality information OPA1611, OPA1612 www. Output Current characteristic curves seem to behave in opposite manners. Hello, I am looking at replacing the old JRC opamp in my phonostage of my amplifier. I must test muses now. 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. Transients are stronger, both rimshots of snare drum and big-band trumpets. OPA1612 VS MUSE02 ทั้งคู่เป็น BiPolar เหมือนกัน เสียงต่างกันไม่มากนัก OPA1612 Jun 19, 2021 · The OPA1642 has more open at the high frequency, it is more detail but it noticeable sharp and edgy sound. May 15, 2022 · Now i tested opa1612 with lme49720 and 1612 is better in my opinion. Joined Sep 4, 2021 Messages 9,115 Likes 15,621 Location UK/Cheshire. 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. 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. tnt-audio. 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 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 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. more specific, the Standard Edition is supposed to have the OPA1642 while the Master Edition the OPA1612. 3V inside of each supply. com and various reviewers, they have different OP amps (Operational Amplifiers). the ne5532 looks a bit harder, narrower and more direct, the other two a bit more relaxed and Mar 17, 2019 · The OPA1641 would be slightly better. Close to zero DC mv at its output would enable removal of the dreaded electrolytic coupling caps which will definitely lower colouration and improve sound quality. 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. Find parameters, ordering and quality information Jul 30, 2021 · If I could also request test of: OPA1642 ~ 2 Euro OPA1656 ~ 2. Rolling opa1642, opa1612, muses8920, 2xopa627bp OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-Brown™ Audio Operational Amplifiers 1 Features • Ultra-low noise: – Voltage noise: 2. 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! Apr 27, 2023 · But according to re-sellers like audiophonics. 1-nV/√Hz as well as an extremely low distortion level of 0. Mar 17, 2019 · The Vendor's Bazaar forum is for commercial offers and transactions. ••• Nov 26, 2017 · thanks for your tips! i have tested the opa2604 and the LME49720 compared to the ne5532. the differences aren't huge, but big enough to make a change worthwhile. 2-nV/√ Hz noise density and distortion of –127 dB at 1 kHz. TSC We would like to show you a description here but the site won’t allow us. For OPA1642, the output current (limit) appears to increase with increasing temperature. Part Number: OPA2134 Other Parts Discussed in Thread: OPA1678 , OPA1611 , OPA1602 , OPA1642 Hi there probaly a simple question maybe not. 000015% at 1kHz. OPA1656 sounded worst, Muses 8920 sounded best. 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. Jan 10, 2016 · He talked to me about OPA1611's versus OPA134's as well as the OPA1612's versus OPA2134's. 1-nV/√ Hz noise density with an ultralow distortion of 0. 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 ran 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. These sound great and outshine many of the other modern high performance audio opamps out there today. fr and eversolo-netherlands. Last edited: 2020-10-05 9:04 pm More options Oct 10, 2020 · Forum Donor. e. You can dig on the Internet and find modern op-amp test results, but it quickly crosses over into sonic character and subjective opinion. My understand if noise isn’t a problem the opa1656 is great alternative to the opa1612. Nov 30, 2021 · Stability should be considered especially with the wider bandwidth of the OPA1656. consists of 2 x 10 op-amps in parallel and the two 10s are balance connected. 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. Jul 4, 2009 · Here’s a great article comparing opa2156 CMO vs opa1612. The dual and quad versions feature completely independent circuitry for lowest crosstalk and freedom from interactions between channels, even when overdriven or overloaded. It has the most stable input capacitance vs. May 23, 2018 · Opa1642 sounds a bit smoother and silky at top end but a little bit fat in the mids. Opa2156 sounds a little more "detailed" and a little "grainy" in comparison. The OPA169x operational amplifiers achieve a new level of performance for low-power amplifiers with a low 4. 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. For high source impedance sensors such as a phono cartridge lower current noise is better. 3nV/rtHz) and distortion (-124dB), wide bandwidth (22MHz) audio op amp. Mar 17, 2019 · We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). 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. 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. Pin can be left floating or connected to any voltage between (V–) and (V+). 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. Oct 2, 2021 #6 I have also tried opa1642, 1612 and 2134, but they are all 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。 Jan 5, 2019 · Other Parts Discussed in Thread: OPA1642, OPA1622. 5). For example, Aol for the OPA1656 with a 600 ohm load will have a linear output swing that is 1. For the case of The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications. 9 nV/√Hz at 10 kHz 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. OPA1656 (CMOS) on an adapter is a winner too. 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. NE5532 is a very good amplifier especially for the price ($0. . Feb 11, 2021 · Below is a comparison between OPA1656 and OPA1642. The diyaudio forum might be better suited for posing the question. The soundstage is the only good part, it's the wider due to the bass boost and upper midrange scoop. LME49720 sound is boringand too light. common mode voltage that I've measured on any op amp. Part Number: OPA1642 Other Parts Discussed in Thread: OPA1612, , OPA1652, OPA1688, OPA1662, OPA1602. 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. I have a 1988 carver stereo TI E2E support forums 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. The OPA827 for example has superior load drive,much lower distortion and miniscule DC offset. They require a SOIC-8 to DIP-8 adapter though. 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. Also the OPA1612 does have the highest quiescent over the other opamps we're talking about it will be the hottest. Two identical gain 11 amplifiers were tested. The OPA1641, OPA1642, and OPA1644 rail-to-rail output swing allows increased headroom, making these devices ideal for use in any audio circuit. May 9, 2023 · Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. com Dec 28, 2017 · There are some things to watch out for when swapping op amps. Last edited: 2023-06-06 6:15 am Dec 6, 2018 · I don't think you can "get into it" here, it quickly degrades to psychoacoustics and audiophoolery compared to science. 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). Without scoping the outputs or measuring the DAC there's no telling if Feb 28, 2021 · The new breed of TI J-Fet opamps offer superior performance to that old soldier the OPA2134. The TI OPA1612 dual operational amplifier benefits from excellent technical characteristics, allowing very good electrical and audio performance. 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 We would like to show you a description here but the site won’t allow us. It offers exceptional performance in almost any audio application. It might require more capacitance in the LPF of the I/V stage to keep it happy Vs the others. 000015% at 1 kHz. but the difference between opa2604 and LME49720 is much smaller than the difference between these two compared to the original ne5532. 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 Apr 25, 2024 · The OPA1642 has much lower current noise and better 1/f noise than the OPA1656. ti. . Only unmoderated members can post here. The following two sets of Output Voltage vs. 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. Opa1612 is generally slightly light weighted but very balanced otherwise. Strange but found too many times to ignore it. Sound is more "color", and "massive". I don't care about listening tests or something else, just want to use the technical better one in my amp. The May 3, 2022 · Its not immediately clear what would upgrade NJM4580 which is already quite low noise. IMHO the outcome was mostly decided by how the opamps responded to the RF coming out of the dac chip. 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. 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. While it still has some treble sparkle, It isn't enough to save its sound of complete mudyness and lack of detail. For some reason I refuse to use it as often as I can though, being CMOS. For OPA1652, the output current (limit) appears to decrease with increasing temperature. Jun 7, 2016 · OPA1612 1612 will sound warmer, thicker, mellower and darker with most headphones and IEMs. 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 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. TL072 is not in the same league, I replaced those decades ago already for better performing types. Aol Mar 7, 2019 · I'm currently using the OPA1612 and OPA1642 in combo with my phono pre and like the sound. 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 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. 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. Jun 5, 2023 · Although specifications of OPA1612 (bipolar) indicate they are superior to that of OPA1642 (JFET inputs) in practice OPA1642 performs slightly better. TL074 is easily surpassed by OPA1644, that's a no-brainer. not going into high frequency oscillation) are different and just swapping ICs may cause problems -- you might need to add some compensation for the OPA1678, depending on Frequency (Hz) Voltage Noise Density (nV/ Hz) 1 10 100 10 100 1k 10k 100k 1M 10M C020 + + ± ± Treble Bass +15-15 1/2 OPA1656 1/2 OPA1656 Input Output Pad Product TI’s LME49860 is a 2-channel, 44-V, high-fidelity, high-performance audio op amp. 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. OPA1612 is fuller sounding - especially lower midrange but also more dynamic. The output swing for Aol should be considered as it is different between the two devices. If soldering surface mount isn't your thing you can order them presoldered from the brown dog adapter distributors. qyuiuw osrzl grjoin hpzsht ywopzl oqmvflgr mbaia flm gnmkik rsdc