Lm4562 review. amplitude measurements of my AIYIMA A07 TPA3255 amplifier, with LM4562 opamps (reduces noise and distortion slightly compared to original NE5532), powered from Mean Well RS-100-24 SMPS set to 27Vdc voltage. Natural Mids (Thin and unchanged) . Perhaps the LM4562 came out before the change so they made a new part number to indicate high end part. Tested a lot of OP, including LME49720, OPA1612, OPA1642, MUSES8920 and MUSES8820. Some are affordable (the LM4562 which runs less than $1), and some are expensive like the popular $25 Burr Brown OPA627. in 2018 it was no 1 soundcard for recording sold on Amazon. Over this supply range the LM4562’s input circuitry maintains ex-cellent common-mode and power supply rejection, as well as maintaining its low input bias current. (Supported by same response graphs in their datasheets) Anybody who has played with these opamps care to share their opinion on how they sound? (HA / Metal can models excepted) Oct 10, 2020 · Aiyima a04 with LM4562 is more dynamic, goes deeper in the bass and sound clearer. In this in-depth exploration, we're going to plug into the heart of this chip, allowing readers to truly understand its brilliance and how it has reshaped the audio landscape. You see the opa2604 has quite a thick sound, easy to listen to, not bright or analytical in any way and the LM4562 leans in the opposite direction, not too much mind but enough to liven up the opa2604 and put some sparkle in there while the opa2064 beefs up the low end of the LM4562 quite nicely and the end result is a fuller rich and detailed Jan 7, 2021 · So this would probably be my final contribution to A07 measurements. g. Below is the measurement of THD vs. This Audio Operational Amplifier achieves out-standing AC performance while driving complex Jan 7, 2021 · After reading, changed OpAmp to LM4562 and bought 48V SMPS from Aiyima - thanks to Youtube didn't burn this one and was able to connect & adjust to 44V. Jul 1, 2021 · 2) LPF의 차동 출력은 합산을 위해 LM4562로 이동합니다. You have to try it yourself to hear the difference, because the measurement advantage is very small, so it should be non-audible , but it is not. I note that the LM833 and LM4562 datasheets contain identical RIAA phono circuits in their application notes. Treble Fully warm and back. Sep 2, 2021 · Douk Audio also offers the B5 portable tube headphone amplifier. Find helpful customer reviews and review ratings for LM4562NA/NOPB LM4562NA LM4562 Dual High-Performance Audio Operational Amplifier with Ultra Low Distortion IC (Pack of 2) at Amazon. Aug 28, 2023 · Review of LM4562 IC. Jan 3, 2020 · The double-sided PCB with groundplane was produced just after these measurements and it significantly reduced the spikes, though not removed completely in case of LM4562. LM4562-+ LM4562 10pF + + INPUT OUTPUT 47 k : 150 : 3320: 909 : 26. ti. ). Jan 7, 2021 · You see the opa2604 has quite a thick sound, easy to listen to, not bright or analytical in any way and the LM4562 leans in the opposite direction, not too much mind but enough to liven up the opa2604 and put some sparkle in there while the opa2064 beefs up the low end of the LM4562 quite nicely and the end result is a fuller rich and detailed Jul 4, 2021 · All op amps in the signal path are LM4562. power, with @90kHz measuring bandwidth and at frequencies 1kHz, 5kHz, 10kHz and 15kHz. 5V to ±17V. Dec 19, 2021 · This is one of the downsides of the otherwise excellent LM4562 - its very sensitive to RF(*), so you have to keep RF out of your enclosure - a feedthrough capacitor on the input might be one strategy, although they aren't easy to come by, but some CG0 input capacitance to ground right on the connector is second-best, although there's a limit to how much you can add in a MM cartridge input Dec 21, 2023 · The V3 is compatible with a variety of dual 8-pin op-amps such as Sparkos SS3602, MUSES02, OPA2604, OPA2134PA, OP249, AD827, RM4559, LM4562, LME49720HA. The architecture is exactly the same as the topping L30. 4 at 1KHz. It really is a very fine sounding dual op amp if not the most 'musical', yet endearing in its own way. One channel driven, 4ohm load. The LM4562 is a high-performance audio operational amplifier (op amp) manufactured by Texas Instruments. However a pair of the AD797BRZ is slightly better, just slightly. 33V negative rail it would deliver even lower output voltage. DAC: ESS ES9018 with LM4562 I/V and filter stages. Not going into the crazy youtube reviews. The LM4562 also benefits from a wide supply voltage range, from ±2. Oct 17, 2014 · LM4562 is far more neutral and a good choice for RIAA circuit. This level of customisation allows the user to easily modify the personality of the amplifier. So far, new opamp seem crispier with better instrument separation but new power supply definitely gave it louder oomph allowing me to hear those sound whispers in my KEFLS50s (which are proven Feb 23, 2019 · The double-sided PCB with groundplane was produced just after these measurements and it significantly reduced the spikes, though not removed completely in case of LM4562. Aug 18, 2018 · The LM4562 is part of the ultra-low distortion, low-noise, high-slew-rate operational amplifier series optimized and fully specified for high-performance, high-fidelity applications. Jan 4, 2009 · I didn't own the aforementioned LME op-amps in the time of the review but added some remarks later in the thread. Nov 25, 2015 · So far I read the OPA2134 as an upgrade to the LM but its quite expensive, has anyone experience with this op amp or do you know any op amps that you consider an upgrade from the LM4562? Feb 23, 2019 · AIYIMA A07 TPA3255 Amplifier Measurements LM4562 option. Apr 6, 2020 · They are not bad opamps at all. This AOP also features a 120dB CMRR and 120dB PSRR, giving it excellent DC performance. The LM4562 is a dual-channel op amp, meaning it contains two separate op amps within a single IC package. The LM4562 combines extremely low voltage noise Nov 5, 2021 · Hypex UcD180HG HxR module analysis and review After buying and testing AIYIMA A07 amplifier (based on TPA3255 class D chip) in January 2021 I was quite disappointed with the frequency response modulated by speaker complex impedance and its audible consequences. Jul 16, 2023 · With LM4562, the noise was -74. LM4562 time record now made by a PicoScope USB oscilloscope. 2 x LM4562 LM4562NA Ultra-low distortion Audio Op Amp - eBay (item 330339367933 end time Jun-24-09 18:13:03 PDT) To cope with the heaviest loads without compromise, the LM4562 has a slew rate of ±20V/µs and an output current capability of ±26mA. com. Good Soundstage May 22, 2015 · G'day all, in the light of a recent experience where a DIY phono stage of mine using LM4562's went into destructive oscillation, I think that perhaps the like of the LM4562 are possibly 'too good' and touchy and I now feel more comfortable with the like of the OPA2134 and the NE5532 at least for high quality audio applications. de here, but it only sells NE5532 version; I wanted a full upgraded kit from the factory (later on that), hence ordered from Ali. The SINAD became over 79db (A07 was 83db i believe) and the THD+N was ~0. 9dBV (24kHz), which would make S/N 87. Aug 20, 2023 · The ones I subbed were LM4562's, which work fine with the Aiyimas. MUSES8820 is the best, IMHO. The LM4562 is unity gain stable. Its also a bipolar Op amp, just like the ne5532. LM4562 is not a rail to rail op amp. 4kHz bandwidth Here we see that the LM4562, LM833, LM49720 and OPA2134 all have the same level of performance with the NJM2742 having the worst performance of the bunch and the LT1352 being just slightly worse. 1mV) give the amplifier excellent operational amplifier DC performance. LM4562 Specification and Features. It’s also only $60 (rather than $75 for the B4 and $105 for the B4X). Feb 23, 2019 · Fig. OPA2134 tested clean in the same setup. Maratnz likes to drive 5532s with the full swing of +/-22V which is too much for most of the stock replacements. Nov 26, 2023 · This is a review and detailed measurements of the Aiyima A07 Max stereo class D amplifier. Other vendors I've seen have been quite a bit higher. Narrow Soundstage NJM2068: Weak bass . 5V to V = 1, VOUT = 3VRMS, fIN = 1kHz) ±17V. 48 in quantities of 100. de and as stated on their website, it arrived without a power supply. Volume control on the V3 is more subtle control over lower volumes. Warm Mids (Deep and Full) . SINAD = 86. Aug 22, 2007 · National uses an additional 'E' in the name (LMExxxxx) to indicate their new high performance audio products. At Digi-Key, the DIP package is USD5. The LME49860 is great, something between the thickness of the LM4562 and the cold neutrality of the LME49720. Regards, Felix. But no perceptible sound difference from the stock 5532's. Very forward Mids . View attachment 44448 Fig. The LM4562's outstanding CMRR (120dB), PSRR KEY SPECIFICATIONS (120dB), and VOS (0. There are many reviews of audio hardware and expert members to help answer your questions. The included NE5532 op-amps are replaceable and can be upgraded with SRT3609SM, OPA2604, OPA2314, LM4562, JRC5532, OP275GSZ, OPA1612AIDR, etc. Another variable might be the buffer gain which you can reset with jumpers. LM4562, even the Picoscope low resolution spectral analysis catches the spikes and repetitive spectral lines every 100Hz. gif I purchased 2 sets of 2 LM4562NA for my X-Meridian from this seller on Ebay. May 30, 2023 · The LM4562, known in audio circles as a game-changer, represents a pinnacle of operational amplifier design. Sound LM4562: 1Mb / 41P [Old version datasheet] LM4562 Dual High-Performance, High-Fidelity Audio Operational Amplifier LM4562: 1Mb / 41P [Old version datasheet] LM4562 Dual High-Performance, High-Fidelity Audio Operational Amplifier LM4562HA/NOPB: 1Mb / 41P [Old version datasheet] LM4562 Dual High-Performance, High-Fidelity Audio Operational Amplifier Sep 8, 2024 · LM4562MAX/NOPB Texas Instruments Audio Amplifiers 2-channel, 55-MHz, high-fidelity, high performance audio op amp 8-SOIC -40 to 85 datasheet, inventory, & pricing. Also, based on my measurement of XLR output and HP out, the power supply is a bit noisier than I expected. Especially on the sound-stage and overall music presentation is more forward with this LM4562. cold Treble (Natural) . Thread starter pma; Start date Jan 7, 2021; Tags Jan 5, 2020 · WANTED: Happy members who like to discuss audio and other topics related to our interest. I received my A07 yesterday, on January 6, 2021, shipped from Italy. This ultra-low distortion, low noise, high slew op-amp series optimized and fully specified for high-performance, high-fidelity applications. The LM4562 audio operational amplifiers deliver superior audio signal amplification for outstanding audio performance. amps and drivers yet only the LM4562 and LM4702 that are not part of these families. 1 to 24/192. 11. LM4562 Pinout. These numbers put in almost on par with the A07 measurements. 1 k : 3. The LM4562 is electrically identical to the LME49720 but cheaper ($3) and comes in a DIY friendly DIP8 package. The LM4562 is part of the ultra-low distortion, low-noise, high-slew-rate operational amplifier series optimized and fully specified for high-performance, high-fidelity applications. The LM4562 has a wide supply range of ±2. Or some other op amp, because their IC socket supports op amp rolling and you can order it with a different op amp if you prefer. I would however say that the sound differences are bigger than what those measurements show, with advantage lm4562. Wide soundstage OPA2134: Strong bass . There is a whole family of LME parts of op. This Audio Operational Amplifier achieves out-standing AC performance while driving complex Most manufacturers use sockets so the op-amps can be swapped, and each have a difference sound signature (e. 50 a piece, but drops to 3. It used all good cheap technologies that are good enough. What is LM4562. Jan 30, 2004 · LM4562 and LME49720 are the exact same part just different model stamped (stated by an ex-employee) The LME49860 is just a LME49720 that passed a higher voltage test. Mouser offers inventory, pricing, & datasheets for Texas Instruments LM4562 Series Audio Amplifiers. May 15, 2022 · Buggle2 Riaa board. Inputs: Digital Optical, Digital USB May 1, 2023 · Internally, the A07 Pro uses the same TPA3255 amp chips featured in the original A07. 13. 1. View attachment 44449 Fig. I have made a thorough THD and IMD vs. However, nothing can neglect the fact that different opamps behaved very differently in the same setup and that sensitivity of LM4562 to EM field was and is highest. 7 dB re 150W/4ohm. I've been researching and designing possible solutions around LM833 op-amps. Desire to learn and share knowledge of science required. Some say it is the same as LME49720, but anyway this LM4562 is lot cheaper. ” ———-As everyone can see - lm4562 measurements with a07 is better , but not much. OPA2604AP, OPA2134, MUSEO1/02/03, LME49720NA, LM4562, AD827AQ, etc AUX Jun 19, 2021 · The latest op-amp that I am still using until now is LM4562. Read honest and unbiased product reviews from our users. Expected to pay custom tax, but for whatever reason did not have to. Sample Rates and Bit Depths USB Playback: 16/44. I am testing the A07 with 2 different power supplies. Funny enough, I could buy it on Amazon. 12. Dec 6, 2020 · Hello mate, this forum is a wrong place to ask since chip rolling is rather discouraged - if you don't have the proper tools to evaluate what your mod does to the audio (something that can measure THD/IMD/noise), then it's better to not touch the audio circuit - replacing a chip with a more expensive or even better measuring part of the same nature will not guarrantee an improvement in the The LM4562's outstanding CMRR (120dB), PSRR KEY SPECIFICATIONS (120dB), and VOS (0. The power supply used was Meanwell SMPS RS-100-24 set to 27Vdc output voltage. Treble with a bit Warm . 3. 4) There is another LM4562 that pulls out hp and reverses it. Some have voltage requirements that make them only compatible in certain designs, etc. ••• Texas Instruments LM4562 Series Audio Amplifiers are available at Mouser Electronics. The DAC chip is powered by, you guess it, an LM4562 op amp. 9 dB re 5W/4ohm and 102. Oct 17, 2014 · Today I changed one of the op amp chips in one of my remaining DIY ESP P06's from an LM833 to an LM4562 making both op amp chips LM4562's. Noise of the A07 is mostly defined by high resistance values in its resistor network around the input dual opamp, there is no chance for improvement without re-designing. The op-amp was sent by Carlos from Burson Audio, so I’d like to give him and Burson Audio a thousand thanks for giving me a chance to try one of the world’s well-known op-amp in the world of audio. Jan 1, 2019 · The lm4562 is also an alternative ( I think its the best sounding in Aiyima a04 and a07 ). The L30 has two chips, while L and R are just one chip. With LM4562, regulated linear 30V power supply and volume pot about 10:00. . The difference you hear with them is actually much more accurate sound. While the B4 and B4-X share the same physical casing, the B5 is slimmer and lighter. 7 nF//500 pF 47 nF//33 nF LM4562 www. 1 to 32/384 supported without drivers on Windows 10, Mac, Linux, Android (any UAC 2 device) with autoswitching to UAC1 for PS4, PS5, and Switch consoles. Jun 7, 2016 · Burson V5i-D Review Shalom, Hello Head-Fi! In this review, I’m going to do a review on the Burson V5i-D op-amp. Same spikes, every 10ms, are visible. May 19, 2017 · An OPA1612 has slightly better specs than an LM4562---less noise and distortion, faster, and more output voltage swing. Samuel Groner did raise some common mode concerns with the LM4562 depending on how it’s configured. so with a -12. Over this supply range the LM4562’s input. Jan 3, 2023 · AIYIMA A07 TPA3255 Amplifier Measurements and Review - LM4562 (and OPA2134) option. This is, unfortunately Jun 24, 2020 · The best popular SINAD 5W/4ohm result so far, with this amplifier. Jul 4, 2009 · I got the LM4562 Comparison LM4562 vs OPA2134 vs NJM2068 vs NJM4556 LM4562: Strong bass . Nov 10, 2021 · Bought on Ali from AiyimaTechnology Store for 87 euros with LM4562 and power brick. • Power Supply Voltage Range: ±2. 2 is provided by a Qualcomm QCC304X and the supported codecs are SBC, AAC, aptX, aptX LL and aptX HD. 01. LM4562 LME49720 MUSES01 Burson Audio V5 Sparkoslabs SS3602 SIL 994 Enh Ticha Version 3 smd LM4562 LME49720 MUSES01 Sparkoslabs SS3602 SIL 994 Enh Ticha Measurements made with APX 525 with software APx500 V3. Purchased at Amazon. Jul 3, 2019 · It gets complicated If you find a review, it could be for an OP275 buffer (they changed the build spec to LM4562 just 2 days ago). Having LM4562 in both amplifiers and they start to sound the same. Feb 20, 2021 · Also in that review though, he replaced the stock op-amps with the LM4562 and those measurements got much better. It really depends how much work is involved. Over this supply range the LM4562’s input Aug 24, 2018 · THD+N Ratio vs Measured Level / Inverting 6dB Gain / 100k load / 22. com SNAS326K –AUGUST 2006–REVISED DECEMBER 2013 LM4562 Dual High-Performance, High-Fidelity Audio Operational Amplifier Check for Samples: LM4562 1FEATURES DESCRIPTION The LM4562 is part of the ultra The LM4562 has a wide supply range of ±2. 74dB. They are "better' ones you can try - LM4562 is always a good candidate just check the supply voltage fist. Mar 26, 2007 · Originally Posted by lixuelai /img/forum/go_quote. 2. Over this supply range the LM4562’s input circuitry main-tains excellent common-mode and power supply rejection, as well as maintaining its low input Oct 10, 2023 · The advantages of the V3 compared to the MAX: 1. Feb 28, 2021 · The LM4562 datasheet indicates it has at least 12dB greater open loop gain than LM833 at all audio frequencies. The sound difference after using NE5532P to this LM4562 is somehow so much different. warm, revealing, etc. Mic Input: 48kHz Optical Input: 16/44. Lm4562 also offer slightly better measurement results ( as pma has shown in Aiyima a07 ). 5 years later Audient has the best quality/price ratio with similar products and technologies. 3) The LM4562 in step 2 is used with the TPA6120A2 and is a nested feedback composite amplifier. Jan 7, 2021 · Noise is almost same as with LM4562 and there are no problems with distortion. Click to expand I have my A04 equipped with a pair of Oracle 02 op amps which apparently have been torn down by an Ali express customer and found to be an modded opa1612. For RIAA applications, I would recommend LME49720 which, according to datasheets is nothing more than just a rebranded LM4562, but in listening is quieter and more analogue sounding, while retaining the 4562's Jan 7, 2023 · Obviously the opamps performances give their best in a dedicated circuit, but I will only make a journey in the 8dip socket dual opamps teorically straight replaciable NE5532P, NE5532D, NE5532DD, NE5532N, NE5534P, LF353N, OP275, TL052CP, TL072, JRC2068D, JRC2068DD, JRC2114D, JRC2114DD, JRC4556AD, JRC4558D, JRC5532D, JRC5532DD, LM4562, LME49860, LM833N, LME49720, OPA2132, OPA2134, OPA2227PA Feb 4, 2014 · In early 2017 I had an intuition and I bought Audient ID 22. Bluetooth 5. I have tried ne5532, opa2604, lm4562 and opa1612 and I prefered LM 4562 in both Aiyima a07 and the tpa3251-based Aiyima a04. 83 k : 100 : 150 : 22 nF//4. 5V to ± 17V • THD+N (A The LM4562 has a wide supply range of ±2. Introduction The LM4562’s outstanding CMRR (120dB), PSRR (120dB), and V OS (0. LM4562NA/NOPB is a dual high-performance, high-fidelity audio operational amplifier. Aiyima have confirmed they are the same analog linear potentiometer as the V3 but the sensitivity of the A07 MAX is twice that of V3, so while the A07MAX volume is nicer than previous Aiyima Amps but IMO the volume on the V3 is slightly nicer and it is very subtle with lower Aug 1, 2011 · The LM4562 was the first op amp to unseat the NE5532 as Doug Self’s overall benchmark. Frustrating. Dec 4, 2006 · The new LM4562 op-amp from has received great reviews, but are pretty hard to come by, and relatively expensive in small quantities. Nothing really magic about the sound or performance of the V3, but it is a good inexpensive class D amp particularly good for lower volumes and where the small form factor works. czspofhslaeiiyfdbiyieuikfvbmcykykuuomismhzpsqkblsmt