Opa1656 sound specs • Audio Effects Processors • Musical Instruments • A/V Receivers • DVD and Blu-Ray™ Players • Car Audio Systems 3 Description The OPA1652 (dual) and OPA1654 (quad) FET-input operational amplifiers achieve a low 4. Download. Since your L/R channels already feature the Oracle II 02cohesive overall sound, complementing the Oracle II op-amps. Mar 17, 2019 · I am currently using the OPA828 in my phono preamp in a "composite amp" configuration in tandem with LT1363 and BUF634A, the game is pretty cool with lots of detail and detail but the sound is sometimes quite dry and sterile, maybe using OPA1655 can improve things, finally it is " sound plus "and no OPA828, although it has much better input In addition, the NJW1194 digital volume control chip allows adjustment of the bass and treble tones for a tailor-made sound experience. Footprint . over operating free-air temperature range (unless otherwise noted) (1) MIN MAX UNIT Voltage Supply voltage, V. 1641 is one of their many options. >90dB power supply rejection over the audio band. Based on OPA1656 with precision thin Nov 11, 2024 · OPA1656 ( modern clean smooth sound, nice "deep" bass, which is "the" pro for me for this opamp ) OPA627 ( goes actually into the oldschool direction, it has similar attributes as the burson V6 vivid, but latter sounds more refined ) Oct 2, 2021 · The 5534/32 (and a few others that have over time faded) were the first Op-Amp's designed explicitly for audio use, with input from genius analogue audio circuit designers, to define requirements. Audiophonics uses TI-LM4562 by default, which on paper has slightly lesser specs than the OPA1612 and OPA1656 which are used in the other custom implementations (EVAL, VTV, Neurochrome, BoXem etc). I prefer the opa2211 over the opa1612 (same chip but with less better specs). Analog | Embedded processing | Semiconductor company | TI. Mar 17, 2019 · ADA4625-X has excellent specs indeed, better than ADA4627-X, so very tempting. The DC offset I imagine is likely really low and must not need must adjustment. Maybe sometimes May 15, 2025 · Texas Instruments OPA165x Ultra-Low-Noise Audio Operational Amplifiers are designed specifically for audio and industrial applications where maintaining signal fidelity is crucial. They are flexible and allow you to orientate your AOPs according to the space available on a circuit or in a box. At the very least I can say it doesn't sound like night and day, like in my previous experience with the Aiyima T9 Pro. Of course this difference is more subtle than tubes. Added a new OPA1656. 6. This device features excellent output current drive capability, offering rail-to-rail output swing to within 250 mV of the power supplies with a 2 kΩ Nov 6, 2024 · Going beyond simple amplification, the OPA1656 brings pristine accuracy to high-fidelity sound systems, addressing the issue of audio distortion common in bustling settings. It has a very good dynamic range and a low level of harmonic distortion. The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. It's a big beautiful world out there! Reactions: Elias Zacharopoulos Jan 27, 2021 · Perhaps putting on the market OPA2134 as an audio specified op-amp is just a way to obtain a better yield rate by being able to sell chips that have failed factory test to meet some OPA2132 target specifications. 000035% (–129 dB) at 20 kHz, and improves audio signal fidelity across the full audio bandwidth. 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. Audiophonics is proud to present its OPA line-up with the OPA1656 based on a authentic Texas Instrument chip. Some people claim swapping opamps can, at best, do nothing to improve the sound and, at worst, can cause oscillation. May 6, 2022 · Good morning. (See diyaudio. Connect to any computer, streamer, tablet, TV, CD player, or many other sources and Modius delivers exceptional sound. Normally, that's not newsworthy because higher performing parts are coming out all the time. I swapped to opa1622's as I had several sitting around and the noise was gone Jul 26, 2020 · 2 X OPA1656 in my Aiyima TPA3251. Manufacturer Specifications Amp Module: < 85uV Output Jan 27, 2024 · The advantage of OPA1656 is that it has JFET inputs rather than bipolar, so its input bias current is much lower, making it easier to keep the output DC offset low in some applications. 20years+ professionally, I've worked around high power transmitting equipment with plenty NE5532's nearby passing audio. Jul 4, 2009 · Source: Linux Mint + EasyEffects + PipeWire + 192khz Upsampling Interface: Black Lion Audio 2x2 Revolution Speakers: Presonus Eris E8 Headphones: DT880 250ohm Tweaks: Topping HS01, Ifi AC Purifier, Ifi Isilencer 3. I decided to update my design to have either OPA1644 or OPA4134. 9 nV/√Hz at 10 kHz current noise: 6 fA/√Hz at 1 kHz • Low distortion: 0. Each part has its specific specs tailored for the application. Our primary goal is insightful discussion of home audio equipment, sources, music, and concepts. I do some current sense functions in power amplifiers using RRIO op amps with low offset. It's a virtually unknown chip as when you search on Digi-Key it doesn't come up as soundplus. 99uV, or a THD+N of -131dB below 3. I pick opamps specifically based on their sound from an subjective point of view, ther datasheets. Often the only thing in the specs that was different was the temperature. 000035% (–129 dB) at 20 kHz • High open-loop gain: 150 dB To the best of my knowledge, the Schiit multibit DACs are quite different. 15W max into 300 ohms. It's interesting to note the NE5532 was more susceptible than I thought it would be. Of course, the success of the project depends on the ability of the designer. Jul 22, 2020 · Hi all, I did some un-recommended opamp experiments with the D10s and would like to share them; I tried OPA627(two opamps for dual) the result was warm and smooth overall sound pleasant to listen to a bit fewer details from stock LME49720, the second try was with OPA1656 which is going stay! with OPA1656, there is an immediate improvement, more overall details and transparency highs, bottom Nov 30, 2021 · Both devices are very popular and great for audio. Tubes colour the sound as well by adding distortion. Dec 24, 2024 · Apollon Audio Hypex NCOREx NCx500 based Multichannel Amplifiers are built on the Hypex NCx500 amplifier modules. I got 1,000 x LME49720 DIP (USA) in Oct 17 (panic buy due to phasing out). 5nV/rtHz, over 80Khz, gives 0. Page: 23 Pages. Not a huge effect though. Surround Frequency Response: -3dB at 7kHz THD: <0. 00005% at 1 kHz • High Slew Rate: 20 V/μs • Unity Gain Stable • No Phase Reversal Good but not great The sound is a bit darker/heavier. Feb 20, 2021 · I think this is to be expected with the much better specs of the A07 and A04. Backed up by an ESS 9018 DAC, OPA1656 op-amps, and optimized filtering using film capacitors and precision thin-film resistors, it’s in the same class as the standalone Modi+—just with a single USB input. Mar 17, 2019 · 2. The OPA1656 immediately raised my attention, plus there was/is a long thread about it on diyaudio. The OPA1656 and the OPA1612 are Dec 20, 2023 · I had ordered some opamps (OPA2134 and OPA1656) in the beginning to tinker with but after reading contradicting opinions decided to leave the original ones in. Today, I still have the same 2020 amplifier and the opa1656 sound much, much better at a fraction of the cost. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety OPA1656 delivers a low distortion of 0. 0006%, 20Hz-20KHz, at 2V RMS IMD: <0. 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. It offers exceptional performance in almost any audio application. Other Parts Discussed in Thread: OPA4134, , OPA1656, OPA828, OPA627, TL072, OPA1612, JFE150, OPA202, BUF634A, INA1620, OPA1678, TL074, OPA1679, OPA1641, OPA1655, OPA1611, OPA637. Jan 15, 2020 · It is also interesting to note that the guaranteed specifications of the MUSES01 and MUSES02 don't really stand out. In fact, from what I have gathered, Sony has consistently used OPA2132 instead of OPA2134 in its audio gears, for • audio·phile: a person with love for, affinity towards or obsession with high-quality playback of sound and music. Craig 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) Feb 7, 2019 · The OPA2156 is a new, high-performance op-amp from TI. Just a thought. But I would still like to see the OPA1656 tested. Modern opamps have seriously low noise/distortion levels that can let the sound come through better. This device also features excellent output current drive capability, offering rail-to-rail output swing to within mV of the power supplies with a 2-k load May 25, 2021 · HOW ON EARTH can the OPA1656 sound SO much better? Is the 1656 "better", or is it "right" and the other parts "insufficient"? Another observation: I built a little stereo signal summer which is a pair of simple unity gain inverting amplifiers (+/- 9 volt power, 47k feedback and 47k input, non-inverting input grounded, dc coupled, 3 inputs per Feb 26, 2025 · Features: All-in-One DAC Amplifier:Using the ES9038Q2M high-performance decoder chip, combined with the TPA3255 high-power ultra-low distortion amplifier chipset, the AIYIMA A80 supports DSD512 and PCM ultra-high-resolution audio, providing users with rich and delicate sound details. I would not classify the OPA1656 as a high speed amp in this context. Years ago the MUSES 01 was $35 in Japan and it was at the time way ahead of it's time. The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. opa627 (in dual), lt1028 (in dual), lm6172 is too much speed, and are unstable in my tube-opamp hybrid preamplifier. I was finding 30-40% to be below-par in terms of burst noise. It seemed to have a bit more livelyness, maybe a touch more dynamics, but that could be placebo. OPA1656 SBOS901 –MARCH 2019 OPA1656 Ultra-low-noise, low-distortion, FET-input, Burr-BrownTM audio operational amplifier 1 1 Features 1• Ultra-low noise: voltage noise: 2. I can't comment necessarily on the sound comparison. May 19, 2017 · Personally I loathe the sound of the LM4562 but I haven't really given it a full chance, tailored to its characteristics. I am building a guitar amplifier based on this design: 40W Guitar Amplifier (P27) (sound-au. This fully conforms to the specs. It wasn't noise in the sense of white noise or popping, or clipping. AD-2PRO+ features two of our 300 Watts High-Powered Single Channel Modules Audio Specifications. com) I have tested the The AIYIMA Tilear Rev 2. This device also features excellent output current drive capability, offering rail-to-rail output swing to within 250 mV of the power supplies with a 2-kΩload, and can deliver 100 mA of output current. Taking advantage of a wide power supply range and mounted on a DIP8 bracket, it can replace many other models. That seemed like a reasonable target for the supply current of the OPA1656 as well. If If I wasn't imaging all of those, the possible change is the circuit layout and the final performance, including crosstalk, distortion, PS noise etc. Don't let power supply current limitations get in the way of performance. Mar 2, 2021 · In principle all variants should sound transparent, but you have the option to change the Audiophonics OP amp if you want. Mar 17, 2019 · The OPA1641 would be slightly better. Nonetheless, I already like it and I think its a better sound than when the 1656s are in the soundstage preamp. 1 Absolute Maximum Ratings. Dec 11, 2019 · Normally you'd regularily search in the manufacturers new product listings first for any new interesting products. Aug 22, 2007 · There are several hundred LM4562 DIP (UK supplier) that I got up to Oct 2016. On the α24, this is a non-issue. 3D Model. The A5 amplifier is based on two TI TPA3251 chips in PBTL configuration, and two dual OPA1656 OPAs. They are not audio DAC chips, and they run natively off a non-audio SPI interface. It has the most stable input capacitance vs. opa1655 と opa1656 (opa165x) は、信号の忠実度の 維持が重要なオーディオおよび産業用アプリケーション向 けに特に設計された Burr-Brown ™ オペアンプです。 • Professional audio mixer/control surface • Guitar amplifier and other music instrument amplifier • A/V receiver • Bookshelf stereo system • Professional audio amplifier • DJ equipment • Turntable • Special function module 3 Description The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio Oct 31, 2020 · Absolutely 0 issue with the OPA1656, nothing to report and running cold. Swapped the DC offset to the OPA1656 first just to see what would happen with the stock op amps and the overall sound. I plan to use a OPA1656 for the first and second stages and would like to minimize noise in the circuit. No complaints here. Description: Ultra-low-noise, low-distortion, FET-input, Burr-Brown audio operational amplifier. Dec 12, 2020 · I notice that, according to the Apollon Audio website, the Purifi 1ET400A Mini Stereo Amplifier - also referred to as the Purifi 1ET400A ST Lux Stereo Amplifier - now comes equipped with the OPA 1656 op amp as standard instead of the OPA 1612. 9nV/√Hz voltage noise density and 6fA/√Hz current noise density. This OPA offers excellent performance for audio applications. 🤣 At least, OPA828 has proper JFETs at input. 0012%; 8 Ohms; one channel driven Compare using a fet opamp, opa1656 vs a opa2134, I see little reason why one would choose a opa2134 for a new design, maybe that's why TI asks so much 🙂 because they want you to use the new tech, but it's probably the cost of the mfg process for that tech vs the new processes. In fact, it’s a proper Unison USB™ DAC, using our own USB receiver, designed for one thing and one thing only: spectacular USB sound. Mar 17, 2019 · 3. OPA1656ID – Audio Amplifier 2 Circuit Rail-to-Rail 8-SOIC from Texas Instruments. Benefit is lower dc offset and less distortion also high open loop gain also superior stability. The sound got little bit better than OPA1656 but still far away from the quality that I expected. May 9, 2023 · Hello together, i want to put one of the mentioned OP Amps in my amp. The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. Nov 16, 2022 · The Schiit Modi DAC turns ten this year and to celebrate this notable milestone the Californian/Texan company has announced a new version. Crafted by audio professionals with two decades of expertise, you're guaranteed an immersive experience where no musical detail is left behind. I'm looking for opamp better than OPA2604 witch big soundstage, and "analog" like sound? But e. 5Volt, just because the THD with -150dB vanishes in the noise. For many audiophile’s systems, especially those that employ older tube electronics, hum or noise is a constant companion with the music. Nov 3, 2020 · Specifications: +/-15v - SMPS is fine. No. It's a killer OpAmp, and better suited to 5 days ago · Texas Instruments OPA165x Ultra-Low-Noise Audio Operational Amplifiers are designed specifically for audio and industrial applications where maintaining signal fidelity is crucial. 1ohms. 000029% (–131 dB) at 1 kHz 0. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety Mar 17, 2019 · Many high-end audio manufacturers still use THT technology and avoid SMD at the sound-relevant points. Oct 31, 2020 · First OPA1656, the sound got little bit better, highs got improved, but still not clarity and hum in the speakers (hearable 10" away from the mid range), poor bass. I had a vision in mind with the Modi 3+ and the OPA1656 happened to work and achieve this 3E Audio, a recognized player in the DIY world, now offers a Class D Stereo amplifier incorporating audiophile Hi-Fi components. 6A per supply rating. File Size: 3MbKbytes. 000035% (­129 dB) at 20 kHz, and improves audio signal fidelity across the full audio bandwidth. Cool. 00005% at 1 kHz. The OPA165x Op Amps offer a FET-input architecture that achieves a low 2. A TSSOP8 to DIP8 adapter should work. Output impedance <0. Input differential impedance at opa2156 is 100Mohm, like opa1656 😉 THD+N=-132dB at opa2156 and -131dB at opa1656 😀 Do you think it is not good for audio ? Both op amps are "brothers" with opa2156 a little more precisely and faster than opa1656. OPA2134 and NE5532 both have power supply currents of about 4mA per channel, and have been widely adopted in the market (understatement). And of course measurements will confirm that the part worked. 75V peak corresponds to) at 20kHz. During my many years of attending audio shows and visiting dealers and manufacturers, all too often I’ve entered a listening room and the first thing I heard was hum coming from somewhere in the system. Use it for gaming. Taking a 500Khz BW, increases this THD+N figure to -123dB. The specs on the opamp are really good, almost as good as the OPA1612 (and better in some ways that will be covered below). Its low-noise, high-performance features enhance its role in precise industrial measurements, making it valuable where signal interference must be minimized. Hello TI Audio World, I'm working on a Guitar audio processor design that calls for a TL74 Quad Op-Amp. I'm looking for help verifying my analysis. All things equal a great firmware that integrate with a high performance op amp with a wide bandwidth will sound ANYWAY you want. OPA1655 和 OPA1656 (OPA165x) 是 Burr-Brown™ 运 算放大器，专为音频和工业应用而设计，在这些应用中 保持信号保真度至关重要。 Jan 27, 2024 · The advantage of OPA1656 is that it has JFET inputs rather than bipolar, so its input bias current is much lower, making it easier to keep the output DC offset low in some applications. It's best use as an alternative to opa1612 when noise is not a big concern. The incoming Modi+ is built around an ESS ES9018 DAC chip – tuned by Schiit co-founder Mike Moffat – and can be fed by one of three digital inputs: coaxial, TOSLINK or Schiit’s own Unison USB input. 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. The result is that used well, they are reasonably transparent. My understand if noise isn’t a problem the opa1656 is great alternative to the opa1612. lib SYMATTR Value2 OPA1656 SYMATTR Description TI/BB Audio FET Opamp to get the same symbols as the ordenary Opamp 4. com Oct 5, 2020 · Only really better substitution for NJM4580 for example as Pre-Amp can be no less then OPA2228 or even better OPA1612, but for that -3dB less noise (and distortion) over whole audio spectrum you will have to play premium extra. CMRR is not a big issue. Getting a Dual Ak4490 mono portable player DAC will bump the specs per channel dbs but they are around 300+ and probably sounds better than many Ak4497eq single chip Mar 17, 2019 · Hi John, Currently kind of assessing the OPA1656 following your excellent thread(s) - very modestly in some line output stages of my HIFI. I routinely use OPA1656 and related on adapters without any issues. 8W max into 30 ohms. It just was harsh. All I have done is an A/B with my favourite op amp, the LM6172, and it didn't come off that well, though you could certainly tell the hard work that had gone into it. I will have a listen to various op amps, old favourites and newer ones, from AD, LT and yours because your triggered my curiousity and all your efforts deserve it for sure. 5-nV/√Hz noise density with an ultra-low distortion of 0. I will try the OPA1656 again for Elna Silmic II caps. Peak output drive current set at 270mA/channel 0. OPA1656 CAD Model. In playmate 2 they seem to be more at home. So the SPDIF/AES/I2S audio stream comes in to a dedicated signal processor that applies all the digital filtering, converts to SPI, and the DAC just processes that into music. com Oct 12, 2020 · The AIYIMA Tilear Rev 2. Try it out in your amp and see if you notice a difference. This device features excellent output current drive capability, offering rail-to-rail output swing to within 250 mV of the power supplies with a 2 kΩ Jul 4, 2009 · This is how sound engineers mix audio tracks. 6 days ago · The Burson Audio EXT-2 are DIP8 extenders to install your AOP in a practical way. Sep 27, 2019 · The high bandwidth and high open-loop-gain design of the OPA1656 provides a low distortion of 0. Well, if I was imaging all those above, then i was. File Size: 611Kbytes. With a wide supply voltage range and DIP8 mounting, it can replace many other models. So I don't think there is a singular correct opa1655 と opa1656 (opa165x) は、信号の忠実度の 維持が重要なオーディオおよび産業用アプリケーション向 けに特に設計された Burr-Brown ™ オペアンプです。 Jan 1, 2025 · All-in-One DAC Amplifier: A80 stereo decoding amplifier uses DAC chips - ESS9038Q2M and TPA3255D2 chips,with Rubycon capacitors, German WIMA capacitors and professional audiophile grade componentsIt makes the power up to 300W @4Ω, which brings powerful dynamics and makes the sound quality more pure. Pure Class "A" Pure & Class A/B Auto Switch & Manual Switch. It's ideal for use with a headset for remote office environments— the audio quality of both the headphone and mic provide crystal-clear communications. But 6 Specifications. • Professional audio mixer/control surface • Guitar amplifier and other music instrument amplifier • A/V receiver • Bookshelf stereo system • Professional audio amplifier • DJ equipment • Turntable • Special function module 3 Description The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. 000035% (–129 dB) at 20 kHz • High open-loop gain: 150 dB Part #: OPA1656. Lots of bass and the highs are sweet, but on burson funk they have background noise from 50% volume up. That's why I prefer the OPA1656 and don't really think of the OPA2156 as an audio amplifier. These extensions also benefit from a very nice design quality, with silver plated copper conductors and gold plated contacts. Use it for working at home. Impact on the XLR Channel OPA1656 in XLR: With the OPA1656, you’d get a more engaging and dynamic sound, which could work well if you use your Part Number: OPA1656 Other Parts Discussed in Thread: NE5532, TL072, LM4562, OPA1678, OPA210. 25V min / BJT - pretty good. com). Its ability to run cool, coupled with its mono block support and balanced input options, positions it as a competitive option in the audiophile market. The OPA1652 and OPA1654 op amps offer rail- Jul 4, 2009 · OPA1656 is positioned for audio applications: low noise and really good THD (-131dB) and high output current (100mA), but still needs a series resistor to drive capacitive loads unfortunately. Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. A quick snapshot of the OPA1656 performance specs: Feb 11, 2021 · Very few high-end audio applications in the signal path need low offset or RRIO. Cimarron has the 1641 in SOIC-8 OPA1641AIDR Texas Instruments - Cimarron Technology They can also mount SOIC-8 on a DIP-8 adapter. The OPA1656 is pretty expansive but still ok, you can find it here with gold SOIC > DIP8 adapter : OPA1656 SoundPlus ™ ultra-faible bruit et la distorsion, Burr-Brown ™ Audio opamp | eBay The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. Nov 1, 2020 · Strong points of the Analog Devices chips were: the impressive clean and fast bass response, the decay of the notes which were clearly audible, the 3D sound-stage, bettering opa1656 sound-stage. OPA1655 和 OPA1656 (OPA165x) 是 Burr-Brown™ 运 算放大器，专为音频和工业应用而设计，在这些应用中 保持信号保真度至关重要。 Dec 10, 2023 · share a test between OPA1612 and OPA1656 I am happy to recommend the 3e Audio 480-1-29A, class D Amplifier. The FET-input architecture achieves a low 2. Texas Instruments OPA165x Ultra-Low-Noise Audio Operational Amplifiers are designed specifically for audio and industrial applications where maintaining signal fidelity is crucial. Stable into any load capacitance. Compared to the vintage Philips FA950 I have as reference, it doesn't sound that much different (if any, but more listening required to be fairly sure). Thanks in Order today, ships today. Don't let yourself be fooled, both are excellent for audio. , as different orderable items. Pete (Turion64) is right, selection of opamp requires synergy with the input cap. Though the diff when using it further down the chain in the amp is lesser than in a preamp. Feb 19, 2019 · I tried my trusty opa1656 with otherwise stock op-amps in the V3 mono 5Amp PS, and what I heard was a noisy presentation. Mar 17, 2019 · Also note, that for TI and many other manufacturers, at one time it was in vogue to release the same IC in multiple temperature ranges -- 0->70C, -40->85C, -40->125C, etc. Lots of Diyers find this difficult to accept since they only tend to focus to the “Analog” part of the Digital-to-Analog converters. Oct 5, 2022 · He further states that discrete op-amps can be designed with a certain sound in mind and the use of the highest performing circuits and endless designer choices. 5. SOIC-8 to 8-pin DIP Apr 21, 2019 · OPA1656 SBOS901 –MARCH 2019 OPA1656 Ultra-low-noise, low-distortion, FET-input, Burr-BrownTM audio operational amplifier 1 1 Features 1• Ultra-low noise: voltage noise: 2. Notes on OPA1656: High-Performance CMOS Audio Op Amp: https: Jul 4, 2009 · The Opa1652 and Opa1656 sound fantastic in those zishans I had both as buffers and they really brought out the best in driving my favorite op amps. I agree with you, OPA1612 is really good regarding details resolution, OPA1656 has the best of both world : ultra high definition regarding micro details and very neutral but still warm. This device features excellent output current drive capability, offering rail-to-rail output swing to within 250 mV of the power supplies with a 2 kΩ Mar 5, 2020 · At first "sight" (listen), the Fosi V3 seems to be pretty decent. Then I tried OPA1612. Part #: OPA1656. There is no practical audio program material which will have 24dBu (which is what 17. Opa1656 has good phase response at high frequency. tnt-audio. Delivering amazing detail for the most demanding studio, home cinema and audiophile speakers with amazing clarity and brutaly honest linear sound. The high bandwidth and high open-loop-gain design of the OPA1656 delivers a low distortion 0. Part Number: OPA1656 Other Parts Discussed in Thread: OPA2134, OPA2604. 3E Audio, a recognized player in the DIY world, now offers a Class D mono amplifier incorporating audiophile Hi-Fi components. And then comparing both just listening to music during a shootout in a very simple test rig (adding them in the loop merely in a non demanding application to see their potential sonic signature) a couple of years ago, I found ADA4627-X better sounding on nearly all aspects. The high bandwidth and high open-loop-gain design of the OPA1656 provides a low distortion of 0. 0, Ifi PowerX 5V, Thel Audio NT-25HQ, Tourmaline Chinch Caps, Supercapacitor USB Filter Mar 17, 2019 · As compared with the OPA1656 which is 24V/us. Oct 11, 2022 · Sound. 9 nV/Hz and a current noise density of 6 fA/Hz, enabling The sound is smoother/refined and more listenable. 4W max into 15 ohms. DC offset <2mV. r/audiophile is a subreddit for the pursuit of quality audio reproduction of all forms, budgets, and sizes of speakers. However, switching opamps can make for a different sound profile through differences in noise/distortion levels and other specs. 0006%, CCIR SNR: >114dB, A-weighted, referenced to 2V RMS Topology: based on OPA1656/OPA1678 Jun 8, 2023 · I read that many like OPA1656/1655 very much. Sound is neutral, detailed, and voices are natural. The only drawback is the higher heat that needs to the dealt with, hence putting so many holes on all its sides. I've had the Burson V5i, and the V6vivid and I have no space to put a sparkos labs opamp single or dual channel. Dec 4, 2020 · I'm using Nichicon Muse BP for the input caps, it adds bloom to the sound and sparkling highs which is not compatible with OPA1656 sound. • Professional audio mixer/control surface • Guitar amplifier and other music instrument amplifier • A/V receiver • Bookshelf stereo system • Professional audio amplifier • DJ equipment • Turntable • Special function module 3 Description The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio Peel back the layers of exquisite sound reproduction as we dissect the inner workings of this technological masterpiece, shedding light on its unique attributes that redefine the limits of audio fidelity. 5nV / 35MHz / 20V/μs / ±2. May 23, 2018 · And opa1656 and opa1612 doesn't sound any different. (If I am not wrong OPA1656 is a really modern OP Amps from March 2019 vs 2017 for the OPA1692). Whether you want better sound from your computer, TV, streamer, tablet, CD player, or many other sources, Modi+ delivers. The FET-input architecture achieves a low voltage noise density of 2. High Performance: Incorporates the OPA1656 op-amp, perfectly supporting headphones up to 300 Ohms impedance, ensuring clear and clean sound. 1 with the following OP amps : OPA1612 OPA627 OPA1656 Burson Audio V5I genuine Jul 4, 2009 · Here’s a great article comparing opa2156 CMO vs opa1612. Feb 17, 2023 · Both opa1656 and opa2156 are CMOS. OPA1656 are better in burson funk, the sound is more normal and no background noise. Jul 4, 2021 · Now you are able to audition the AD746 and the LT1124 and the AD8599 and the OPA2209 and the LME49723 and the OPA1656. Topology: based on OPA1656/OPA1678 Gain: 0dB in absence of processing, up to 12dB with processing Output Impedance (line out): 75 ohms. asy using the ADA4627 as a template 3. Thanks in May 15, 2025 · Texas Instruments OPA165x Ultra-Low-Noise Audio Operational Amplifiers are designed specifically for audio and industrial applications where maintaining signal fidelity is crucial. 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! • Professional audio mixer/control surface • Guitar amplifier and other music instrument amplifier • A/V receiver • Bookshelf stereo system • Professional audio amplifier • DJ equipment • Turntable • Special function module 3 Description The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio Jul 4, 2009 · The Opa1656 has a much wider and better soundstage. Ha ha it's funny because I'm a wide and far reached detailed and accurate fanboy and some people find too many details to be annoying. Prepare to be captivated as we unravel the mystique surrounding the OPA1656, an audio connoisseur’s ultimate companion. Description: OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-Brown™ Audio Operational Mar 30, 2025 · The OPA1656 has slightly better noise specs and can have slightly better RIAA accuracy due to its higher gain-bandwidth product, but it is also more prone to oscillations with awkward source impedances due to its high gain-bandwidth product and high differential input capacitance. So far, most of @amirm 's op-amp rolling tests have been with "discrete op-amps" -- but we know from DACs that discrete DACs have failed to match the performance of the integrated circuits from ESS and AKM when it comes to noise Dec 28, 2018 · I would like to see the OPA1656, a burr brown sound plus chip. g. com with a TI insider involved. Aiyima A80: Easily replaceable DIP8 OPAs The Aiyima A80 amplifier's preamplifier stage features DIP8-mounted OPA1656 and NE5532 AOPs for easy replacement. Basically, if you want better sound for your headphones from virtually any source—and we’re talking computers, tablets, game consoles, TVs, phones, heck, even CD players—and you also want to have crystal-clear voice communications from an external microphone (whether you’re talking to your raiding May 20, 2021 · A30 PRO uses 10 OPA1656 op-amps in parallel plus an ultra-high-gain-feedback design for an outstanding power delivery, something that I’ve never seen at this size and weight. Burr-Brown™ Audio Operational Amplifiers The OPA1655 and OPA1656 (OPA165x) are Burr- 6 Specifications. Pricing and Availability on millions of electronic components from Digi-Key Electronics. The OPA1656 is a newer device with better typical room temperature specifications in regards to the following: Jul 22, 2021 · I can't imagine the OPA1656 with an ESS unless some special whisperer secrets were applied. In particular, it has very good dynamics and a low level of harmonic distortion. 1 with great caps and some mod (OPA1656 / inductors update) sounds really good too. Mar 17, 2019 · Again, it's the circuit topology that is the most important to get the best sound out of any op-amp. Sep 18, 2021 · OPA1656 Pinout. But this time it's a bit more interesting. Page: 42 Pages. Fulla E works seamlessly with many popular consoles like PS4, PS5, and Switch, as well as PCs, Macs, and tablets. Audio Specifications. Mar 17, 2019 · Just going into some more details with the OPA1656: with an average 3. 9 nV/Hz and a current noise density of 6 fA/Hz, enabling extremely low noise performance in a wide range of circuits. A quick snapshot of the OPA1656 performance specs: Oct 11, 2021 · The OPA1656 is an operational amplifier (op-amp) designed for audio and industrial applications where signal integrity is critical. Jul 4, 2009 · The biggest difference sound wise between the ak4497 and the ak4493 dacs is that the latter is less detailed but has more of bass-er sound with the sound being in the foreground. Also, a LME49720HA that costs 5 times as much as the PDIP or SMD version should also be interesting in terms of cost calculation. I don't care about listening tests or something else, just want to use the technical better one in my amp. The A7 Mono amplifier is based on one TI TPA3255 chips in PBTL configuration, and a dual OPA1656. 000035% (-129 dB) at 20 kHz and improves audio signal fidelity across the full audio bandwidth. Symbol . I did check OPA1656 in voltage regulators and didn’t like elevated LF noise (compared to JFET opamps). 2. Together will make a really good composite amplifier, I will try this application at some stage. What is OPA1656? The OPA1656 is an operational amplifier (op-amp) designed for audio and industrial applications where signal integrity is critical. on LTSpice load, the lengthy lib update happend. Dec 20, 2023 · The Fosi Audio ZA3 is an impressive amplifier, offering high-quality sound, versatile features, and efficient operation. Specifications can not alone explain an op-amps appeal. Pure Class "A": 60 Watts RMS/channel; 20 Hz – 20 kHz; THD=0. 1 nV/√Hz at 1 kHz • Ultralow Distortion: 0. Great alternative to TPA325X / Hypex Ncore (this is subjective ) is the double Mono Merus amp. I’d rec them to anyone rocking the z1! Just got the Zishan ak4495 today and just in stock its THE best sound one, I’ve tried in the series! Mar 17, 2019 · The good news is that in audio, impedance levels are relatively low so parasitics need to be larger to have a bad effect, and most audio opamps are not really high speed. You can configure it from 3 to 5 channels. Strong points of the opa1656 chip were: better timbre of both voices and instruments, bold sound (which is really impressive). Oct 14, 2024 · The OPA1656 has a slightly warmer and more musical sound compared to the OPA1612. The applications that slew rate limiting is important to take into account is using the device in non-audio applications. common mode voltage that I've measured on any op amp. Composite amplifier is one of the best application with opa1656. Jan 19, 2023 · Quick specs: 2. We can answer that one, but it kinda breaks down by what you’re gonna use it for. The question is rather moot anyway. Currently rocking the BUF634AU in it. Yet I keep reading countless positive comments on the Muses and Sparkos. Low voltage ADCs are about all I can think of. 0. Haven't tried OPA1656 after that. Mar 17, 2019 · Yes, I think I will just use the old DIP PCB instead of the SOIC PCB. Anybody know beter opamp than OPA2604 with realistic "analog" Aug 12, 2023 · That said, if there's not strong WiFi/DECT RF nearby my measurements agree with published datasheet specs for noise. High Performance DAC and USBModius E features Schiit’s exclusive Unison USB™ interface, which provides plug-and-play compatibility with virtually any modern device. I haven’t tried it for audio as outright replacing JFETs with CMOS looked like blasphemy to me. • Professional audio mixer/control surface • Guitar amplifier and other music instrument amplifier • A/V receiver • Bookshelf stereo system • Professional audio amplifier • DJ equipment • Turntable • Special function module 3 Description The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio This OPA1656 OPA from Texas Instrument offers very good performances for audio use. The Opa1612 is the audio version so they made the specs slightly worse. Altered text SYMATTR Value OPA1656 SYMATTR Prefix X SYMATTR SpiceModel OPA1656. kcxjjgrb gnmu yhse saj wmyidt ekfazm qdnni fahuo tlf ojiviq