Aiyima a07 op amp upgrade review forum

Aiyima a07 op amp upgrade review forum. 2. Amp with RCA in, sub out, volume and power switch. i also bought four akliam lc2 discrete class-a op amps; cost was $60 shipped. One of them is a linear regulated PSU with 30Vdc voltage and current 1. Aug 19, 2023 · I've owned several other Class D chip amps in the past, including the Aiyima A07, SMSL AO200 and at least a couple different TPA3116 Topping and SMSL models. A real game changer in the audio world. Nov 26, 2023 · It’s the engineering that counts. Nov 15, 2023 · Fosi ZA3: Aiyima A07 Max: Summary: Stereo Amplifier with balanced and unbalanced inputs + Nicer looking case + Power ON/OFF is Volume knob push and hold sequence, volume re-adjustment isn't an issue after ON/OFF as it can remain same Nov 15, 2023 · well, since i last posted, i ended up buying two aiyima a07 max amps w/the 48v/5a power supplies. As everyone can see - lm4562 measurements with a07 is better , but not much. It's not as hot as AIYIMA A07. Many people say that replacing the NE5532 op amp by the LM4562NA makes the sound better, so I am inclined to go for the LM4562NA version. none of the amps seem to meet the mfr's specs, but the aiyima seems to fall short the most. Actually looked up the chipset - it has 2x160-W @ THD = 10% so obviously will be something like 2x100W at a more reasonable THD level. Aiyima was gracious enough to send me a unit for review and evaluation. Total cost will be around $175. I will team this little power amp up with the Aiyima T10 which is also a nice little unit with plenty of sonic goodies. TPA3255 based amplifier, probably upgrade to their A07 amplifier. Just for manufacturer information. Jul 1, 2022 · The Aiyima T9 is a class D tube amplifier that boasts 100 watts of power. I use them with Rpi's and DAC's (hifi berry and a topping via USB) and also a turntable with built in pre amp in my main listening room. Functionality it is like the Aiyima A07. Nov 26, 2023 · While the channel imbalance surely isnt the best sign, you got to point out that the amp actually seems to perform better in the thd departement than its official spec suggests (0. Nov 26, 2023 · The Aiyima A07 Max is an amazing amplifier, the Fosi V3 is an also amazing amplifier. and maybe it had the 50v caps instead of the later 63v caps, which were updated Nov 26, 2023 · For very small DJ gigs, I now use AIYIMA A07 Pro with 36V/6A PSU coupled with Behringer PK108 pair [8 ohm 320 w max (peak) power]. I replace the A07 with the Sunfire in my office because I was getting ready to sell it and I wanted to make sure all the channels were still working. People that know things simply ignore it. Both the Fosi V3 and the Aiyima 07Max (and May 1, 2023 · Internally, the A07 Pro uses the same TPA3255 amp chips featured in the original A07. Sep 28, 2023 · Temporarily have Fosi V3 with stock OP amps, he sounds a little warmer than 07 Max, also when putting the volume knob on at 10 o`clock aiyima has a disbalance in channels Fosi doesn't have it, also when turning off the amplifier knob on Fosi click differently than aiyima I think is 100% different potentiometers is used. 5*2. Actually it is TAS5352A. Aiyima D05 Chips set: CM6642, TAS5508, TAS5352A, QCC3008, CS8422, WM8782. 00 and an extra $38. Oct 16, 2020 · I own two Aiyima a04 tpa 3251 and they really are excelent and better than all competition in the pricerange. May 20, 2023 · Socketed op-amps are a big selling point and such ommition would cost Aiyima a lot of customers that watch certain youtube reviewers. I am testing the A07 with 2 different power supplies. #268. Nov 24, 2023 · With LM4562, the noise was -74. The wire and plug are quite thin but okay, housing plastic is also cheap but okay. This is a review and detailed measurements of the Fosi Audio BT20A stereo class D amplifier based on TI TPA3255 IC. Nov 10, 2021 · 1. 5 mm jack's installed. Those capacitors are for decoupling and filtering high frequencies, so the reduction in Jun 6, 2022 · Also, by using NJW1194, you can use the EQ function and tone control built into the chip, but the A20a 2022 does not have these functions. #142. This is the first. What we sent to Amirm was the earliest version of A07 Max, which has now been updated to 63v capacitors. Nov 26, 2023 · Given the ridiculous low price of the AIYIMA A07 Max when on sale (like now), I grabbed a couple for $50 each delivered! I also picked up a pair of these power supplies on the AE sale to run them - High-power digital audio amplifier board DC48V 7. Sep 22, 2023 · Friends, I have come across a new Aiyima amplifier soon to be available. It has two inputs, one AUX input, which is convenient for traditional wired analog signal input; there is also one Bluetooth wireless input, which can be easily connected to Bluetooth devices such as mobile phones and computers, without being bound by wires, and easily enjoy A07 PRO TPA3255 Bluetooth Power Amplifier. For a personal view - why not a power amplifier ?, the same unit but without a volume knob. #1. I think that implementing PFFB and changing the ne5532 to LM4562 would be a fantastic audiophile upgrade. Hi all, I have ready virtually everything I could find on ASR on the Aiyima A07. It is a little inferior to the BT of the latest DAC. I made a custom enclosure to keep it safe. Jan 21, 2022 · In my honest opinion and with the experience of rolling op amps and owning a few class d and an A/B amp the most impressed I have been so far is with the Aiyima T8 with tube upgrade to the GE5670 and my A04 modded with Coilcraft power inductors and the opa2604 replacing the NE5532. There are lots of videos and forum posts of people comparing op-amps, and on this amp especially. I bought the 2 Sparkos Labs Dual Discrete Op Amp SS3602's on sale and put in my A07 and I thought it made a big difference in clarity over stock. Several power vs distortion graphs show, performing this product is quite stable. Nothing else to distract you. like we know aiyima can get power out of a 8255. Sep 28, 2023 · But advertising upgrade components does not mean the internet will believe it. so, i opened them up to install the op amps. My quote is from the documentation of the LMR16030, it is the main 12v step-down component used in the A07 Max, the maximum input voltage is 60V. 5mm DC coaxial power plug- something that would just never happen. The Class D amplifier is highly efficient, and the device runs very smoothly and quietly. I have a YouTube channel where I post reviews of amplifiers and other audio components. i'm wondering if the example asr reviewed was not up to snuff. I think the best combination is a really good vacuum tube preamp and a ZA3, especially if the tube preamp is fully balanced with XLR balanced connections. Dec 20, 2023 · With a good op amp upgrade, these amps no longer become the limiting factor in an audio chain. It was kindly drop shipped to me by a member and costs about $90. don't expect anything (pre conceived ideas) is always the best way to audition audio equipment. . 5x2. Jan 1, 2021 · It has some potential -- the heat sink seems to be about the same size as the A07's, but at least the case is larger and better ventilated. Jan 1, 2021 · If your source player, or preamp has high enough output, with the A07 volume set to maximum (the typical/right way, when using it as a power amp), then for sure the A07 will clip if you crank the preamp's volume high enough, and it won't take much for that to happen if you are using the 32 V power supply. Aug 14, 2021 · I have zero noise or ground loop issues. The sub cutoff frequency looks like it was designed to work in a sound bar configuration, with tiny main speakers. The DC seat uses all metal materials with fireproof flowers, which is safer to power on. if you don't need xlr or a trigger, you should consider the aiyima a0x7. Sep 28, 2023 · I recently replaced my Sunfire Cinema Grand 5 with a Buckeye NC252 MP for my home threater. 5A max. They're great in terms of sound quality and build quality for the price. 5mm AUX OUT as output connect to next amplifier without volume control >>>> So, no volume control to AUX/Pre out THD：0. Add a heat exhaust fan to reduce the heat generated by the chip. Nov 18, 2023 · 68. I'm running Spektor 2s with Drok PS. 1) The pre-amp LFE (subwoofer) output is not controlled by the main volume knob, so the amount of bass is never consistent with the overall volume; it Nov 26, 2023 · This amplifier probably should be tested at 48 volts. Website: www. Jan 1, 2021 · The TAS5352 amplifier IC is very old (current TAS5352 DS is 2007) and is NOT recommended for new designs. Dec 20, 2023 · Jan 28, 2024. Parameter:Chipset: TPA3255+NE5532Replaceable operational amplifier chips: RT3609SM, OPA2604, OPA2134, LM4562, JRC5532, OP275GSZ, OPA1612, MUSES01/02/03 www. The brightness of the display display cannot be adjusted and the display cannot be turned off. Unique and amazing combination: integrated A8 Pro amplifier with VU meter into whole in such a mini size, when enjoy HiFi music, the pointer dancing in the warm light with strong vintage feelings, dynamically decorates the audio system space. The higher the input sensitivity, the greater the amplification factor, and the noise floor will also be amplified accordingly. I tested a few different op amps including the Oracle 02 which are decent but lack low end grunt, great vocals and highs though. The cost is US $72 on Amazon including prime shipping. Bluetooth 5. A07 max sounded crisp but localized. On BTL, 51V it is over 200Wpc at 1% distortion. It was sent to me by the company and costs US $139. Apr 12, 2024 · Apr 12, 2024. I double-checked the orientation to make sure the op amps were installed properly. Not earth shattering. Without a negative (-15 V) supply, to get the largest input signal range without clipping, the input stage is biased in the center of the supply range at +7. The unit , according to the advertised output, is on SE. 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. Mar 8, 2024 · I keep hoping Aiyima or Fosi or SMSL will make a matched amp - preamp stack with the amp "just an amp" and the good stepped volume control, multiple inputs, phono input/preamp and remote control all with the preamp side. Nov 26, 2021 · In case you feel the need to replace the op-amp, replace it with opa2604, opa2314, lm4562, jrc5532. It is the review with measurements of the AIYIMA A07 MAX. Checking the printed circuit board pattern of the new model A07 Pro, you can see that the wiring Nov 26, 2023 · Anyway, Ayima A07 max good. Jun 6, 2021. ———-. If LM4562 reduces noise leaking into house wires significantly, I may consider it a worthy investment. How they differ in performance and sound I have no idea. I changed the op amps in my ZA3 to some low cost ones, but an upgrade still, and it made a positive difference in sound quality. I ordered an A07 with the 4562 op amps from Aliexpress. Dec 7, 2022. 10 amps. Amazon US Store: amzn. Nov 18, 2023. On the minus side, the power supply's heat contribution might offset the case's thermal advantage, especially if you swap in a more powerful unit, and the DAC and/or Bluetooth features are, well, of no interest here -- but they may well be useful to others. Controls are simplicity in themselves: push in the volume control to select input (RCA or Bluetooth/USB). i received everything on 5 feb; ran them for a few days, and i was delighted w/what i heard. 5 V. The measurements of Aiyima a07 tpa3255 is better than Behringer A800. Although NE5532 performs well, many audiophiles still want to improve the sound quality by replacing the OP chip. Back panel looks simplified: - RCA input. 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 Nov 26, 2023 · Japan. One of the Amazon review posters sung the praises of swapping in OPA627AU ampsthere were a number of alternative ones mentioned as being "better Aug 31, 2023 · Although, I could see the “all in one” appeal for non-critical listening, or as a desktop amp. Oct 2, 2021 · And maybe 90% of the buyers dont care much about soundquality also…. It was sent to me by the company and costs about US $160. Would even pay up to 30-50% more to avoid any risk of rma. Nov 26, 2023 · aiyima a07 max, asr measured, in stereo: measured in mono: per mfr's specs, the a07 max seems to have the edge. 1 with my custom "perfectionist based" crossover, 3-way DSP and Subwoofer). Results can often be unintuitive and surprising. 00. However, my understanding is that the version Amir tested and Oct 8, 2023 · The advantages of the V3 compared to the MAX: 1. 99 with 32 volt power supply. Volume control on the V3 is more subtle control over lower volumes. Purchased at Amazon. I'm running two A07s now, one with OPA1656 op amps, the other with OPA2134s. aiyima. I think 50V gives ~300W, and the 20-something V power supply gives 100-something watts. The brightness of the blue display can be annoying when connected to a TV. Last night I checked for noise at high volume on the whole system and couldn't detect any. Would be more useful if it had standard tone controls on the pre-amp. Perhaps this Amazon review is accurate. The TPA3255 has four amplification modules that can be run in SE ( up to 4 channel), BTL ( bridged stereo) and PBTL (mono). But they settled down after being left on 24/7 for a couple days. It is obvious that they intended on releasing a product that they could "WOW" the mobile market with, as this A07 pro does shine as a Bluetooth amplifier. View attachment 240550 It is so nice to see a VU meter on an amplifier! This one actually seems high quality with nice ballistic response (fast jump, a bit slower retard). not for 70 dollars for a whole amplifier. One channel driven, 4ohm load. When turn volume way up i can hear distortions and have shutdowns here and there. - better speaker terminals, looks bigger than usual ones used in similar amplifiers. 2. The input sensitivity of AIYIMA A07 Max is 1V. This means that when the volume level is set to MAX, the rated maximum output is reached with an input of 1V. It was sent to me by the company and costs US $177. The setup performs pretty decent for the price (less than 100€). Further, the amp can be purchased from Aliexpress with no power supply for $50. However, upon further research, the 100 watt rating is for 4 ohm speakers and if you are powering a set of 8 ohm speakers, the rating drops to 50 watts per channel. 5MM. Assembly quality of my unit is good, or even very good. If the sound quality ramps with the price paid for the op amps then there are some 7. Jan 27, 2023 · I have a 32V 5A Aiyima A07 from July 2022 with markings on the capacitors that read Nichicon 1000 uF 50V. Except for power. 3A 350W Power Board Amplifiers Switching Power Adapter. 🤷‍♂️ Reading the other comments here, maybe buying a whole other amp would be better, but I alread Nov 24, 2022 · According to Aiyima's scheme, that 3. Sep 12, 2022 · This is a review and detailed measurements of the AIYIMA A200 stereo amplifier with USB DAC and Bluetooth. the Samwha is about 1/2 inch taller than the Nichicon. Mar 28, 2024. Hello everybody, I'm new to the forum. It was kindly purchased new by a member and drop shipped to me. 9dBV (24kHz), which would make S/N 87. I have a couple of Aiyima A07 amps in my house which in my main listening room and a second one in a bedroom. Oct 19, 2022. In my office I was using a Aiyima A07 to power a pair of AV123 Encore X-LS's. Mar 8, 2024 · Mar 9, 2024. cost was <$170 shipped. Sweden. lol. Fosi Audio is releasing their new V3 amp. Nov 1, 2022 · Nov 1, 2022. Controls are simplicity in themselves: push in the volume control to select input (RCA Nov 1, 2022 · Yeah, I'm also interested in Aiyima T9 Pro subjective opinions and comparing sound overall/general to other op-amp/no-tube vs tube-buffer chip amps. It also corroborates the power supply test image uploaded by an amazon review, indicating that the power supply is significantly overrated. The T9 uses an NE5532 chip for output power. Nov 26, 2023 · The reason why A07 Max has this problem is that the input sensitivity is 1V, while the input sensitivity of V3 is 2V. Apr 12, 2024 · Even if the rotel is 10 years old and more expensive than the a new Aiyima? Rotel is a very conventional build in a good sense. 007%) Yes probably good enough for me. de and as stated on their website, it arrived without a power supply. People have preferences, I do. I am not sure why it is on Kickstarter to launch, but I backed it since I was hunting for a simple amp. I found the amplifier to be a lot like the Fosi V3 - apart from the noted Stereo/Mono feature, which I have not made use of. Sep 8, 2021 · I use this to power both the Aiyima A07 and the Aiyima A3001 simultaneously. Nov 26, 2023 · Many members of ASR have not pointed out anything about this until now. I like that you can easily defeat the tone controls now and select one of three inputs, allowing the amp to replace a pre-amplifier as well. May 14, 2022 · This is a review and detailed measurements of the AIYIMA A07 desktop amplifier based on TPA3255 class D amplifier chip. The competition is really high now with SMSL, Fosi, Aiyima, others are working the same space May 23, 2023 · May 23, 2023. The included NE5532 op-amps are replaceable and can be upgraded with SRT3609SM, OPA2604, OPA2314, LM4562, JRC5532, OP275GSZ, OPA1612AIDR, etc. If they continue to follow Apple’s naming conventions for iPhones, I guess next year they will release the A07 PRO MAX, and it will have the power of the 3E AUDIO board that was recently reviewed. This is entirely wrong . I've got 2 5. i upgraded the op amp to a discreet op amp in the one driving the full-range driver in my oris 150 horn. In the review of the Fosi V3 (Fosi Audio V3 Amplifier Review ), Amir wrote “There are replaceable op-amps for those of you who have nothing better to do than mess with the design. It was sent to me by the company and costs US $99. The T9 includes one set of speaker connectors allowing you to Nov 26, 2023 · Though its technical forum, but purely subjectively speaking, personally I found single A07 max better sounding than 2x A07 max's. How good is the 2 Ohm Performance of the A07 MAX and can used a 2v RCA PreAmp ? The Powerhandling of the regular 3-Way Settig with 1x Low, are 150-200 Watt RMS @ 4 Ohm. I'm using the A07 (at 40V) and a tube pre-amp T1 (at 12V), just using a variable step-down transformer (like this one for 9€), to convert from 40V to 12V. This Fosi V3 is the best of the bunch, a simple, genuinely powerful/useful, truthful, nice-looking and nice-sounding amp that can be tucked pretty much anywhere. Mar 14, 2023 · Fosi Audio BT20A Pro Amplifier Review. Well, check Aiyima D325x Nov 8, 2023 · This is a mini-review of the new Aiyima A07 MAX class D amplifier from my "average Joe" perspective. Aiyima has nasty tone controls and normal features of a low cost class D amps. Jan 1, 2021 · Aiyima is currently selling two A07 versions. HiFi clear sound with tone control . robgnyc said: Curious if a preamp or changing OP Amps has more impact on the overall sound. Location. Perhaps service will be in order at 15 or 20 years, perhaps not, but that's easy. and the screen would be really good if it implemented streaming features but i'm guessing they aint going that far so i feel a screen on a non networked int. 9 dB re 5W/4ohm and 102. Nov 1, 2022 · This is a review and detailed measurements of AIYIMA A08 Pro stereo amplifier with Bluetooth support. Nov 7, 2022 · And put an amp behind each speaker so that the speaker cables are short. " Then say: " OP275: Better resolution, low frequency and sound field than NE5532 ". I would however say that the sound differences are bigger than what those measurements show, with advantage lm4562. I am hesitant to use a Mean Well, because I am not sure which wiring I Dec 7, 2022 · 3. It is so nice to see a VU meter on an amplifier! This one actually seems high quality with nice ballistic response (fast jump, a bit slower retard). As for your audio chain: The Topping in there is strange. Its purely personal and very subjective, in case it helps decide as per your preference. Sep 28, 2023 · Every owner of the former A07 says the same thing, big improvement in sound quality with a fuller and warmer sound, more punch too. Its performance is highly dependent on power supply voltage and current. It costs (almost - I see your further comment) nothing to have socketed op-amps. But compared to the initial offering of the A07, this PRO unit is demonstrably inferior. 2 is provided by a Qualcomm QCC304X and the supported codecs are SBC, AAC, aptX, aptX LL and aptX HD. This is a review and detailed measurements of AIYIMA A08 Pro stereo amplifier with Bluetooth support. But I preferred the function of the aiyima, so I bought them. Sep 8, 2022 · This is a review and detailed measurements of the AIYIMA A200 stereo amplifier with USB DAC and Bluetooth. the right channel was noticeably louder than the left. DC24-18V power supply. BT is equivalent to SMSL AO200 / DA-9. Also I found ZA3 to have dispersed sound with better staging. AIYIMA's latest TPA3255 power amplifier has PFFB function and is equipped with 48v5a GAN power supply. Jan 7, 2021 · AIYIMA A07 TPA3255 Amplifier Measurements LM4562 option I received my A07 yesterday, on January 6, 2021, shipped from Italy. looks really interesting. As I said earlier - Aiyima themselves recommends lm4562 as an upgrade and you can buy the amplifier from them with lm4562 , for an additional cost. On the A07, it is indicated that the 3. I am thinking about pair of AIYIMA A07 Max in mono mode with 48V/5A PSU pair to replace A07 Pro. You may want a 40V or 50V power supply for each one, if you are cranking up the volume. amp seems to be a nice frill but not 100% necessary. i bought one of these recently when on sale and just got a chance to test it. 00 to Amazon for a 500 or 600 watt 48 volt supply. T. Both can be identified by Amir’s reviews. DC seat interface 5. Feb 3, 2024 · A typical example is a device powered from a single rail, such as a small amp using a simple power supply with +15 V to ground. Aug 11, 2021 · As a point to be worried about D03. Features：1. Different from their offerings to date and a step up, say if priced around $400 for the pair. Thank you for the information. 7 dB re 150W/4ohm. Feature:1. #62. The fever is a little hotter than the SMSL AO200 / DA-9. 5mm connector can be both input and output. DROK 48V Power Supply, AC 110V/220V to DC 0-48V 10A 480W Buck Converter, Adjustable Variable LED Adapter Regulated 5V 12V 24V 30V 36V Jan 1, 2021 · AudioArchitech said: Aiyima: "Currently, the op chip used on AIYIMA A04 & A07 is NE5532. The compact size should fit on desks well. Nov 24, 2022 · The LM4562 A07 does work really well if you feed it with a good preamp like the Aiyima T6 Pro which also is flexible when it comes to op amps. The Aiyima T9 uses the TI TPA3221. If you input the DAC's 2V output at this time, it will be completely saturated and distorted. I have the 32 and 36 power bricks from Aiyima already but in my experience the 36v is best. I like reducing noise in house wires. - AUX input/pre-out. I'm using the 32v 5 amp brick on the other A07 to run some tweeters. Apr 26, 2023. Another one to add to Aiyima’s list of: “let’s add another variant around this same TPA3255 amp. Despite its low cost, the case gives a feeling of quality. 25 inch aluminum plate that costs around $25. 007% SNR：≥110dB Input sensitivity：1V >>>> Should it not be around 2V? Nov 24, 2022 · This is fine, and they can do whatever they want. And as of this shipping, it also included a 32 volt, 5 Oct 30, 2023 · This is a review and detailed measurements of the AIYIMA A07 Pro stereo amplifier. Less fortunate will play with it and be happier as result. If all works well, I will have a pair of mono-blocks capable of approximately 170 watts per channel into 6 Ohms at 1% THD. Try a 50V12V switching power supply, and the output can reach 300W under the condition of 10% distortion. Sound Oct 5, 2020 · To get even close to the spec, you'd need a 51V 650W supply, which would need to deliver nearly 13A through a 2. First of all, we need to know the input sensitivity. Nov 24, 2022 · Remove the case and increase the heat sink. Nov 26, 2023 · This Speaker-Set are 2 Ohm and i want a Amplifier for this. base, and see how it sell. com. SMen and Mnyb. Power brick is 32V 5A, average quality. Nov 24, 2022 · AIYIMA A07 Pro. Nov 26, 2023 · The amp will go into themal shutdown before you can get the best out of it. Spec sheet was revised in 2016. The packaging is extremely simple, but thorough. AIYIMA Support Email: sale@aiyima. I have no way to know if any of the op amps - original or 2134 replacements - are genuine. Sep 8, 2021 · Sep 8, 2021. If the social media response mirrors Fosi's with the V3 Op Amps; Aiyima will need to provide receipts proving they are not smaller value caps with 63V silk screened on them Sep 12, 2022 · That Aiyima T5 amp uses the ST TDA7498e power chip. The model name is a bit confusing but oh well. #4. Apr 26, 2023 · 43. Dec 31, 2023. The Powerhandling of the Power Sertting with 2x Low, are 200-250 Watt RMS @ 2 Ohm. both were shipped to me, with the 48v/5a power supplies, for $166usd. to/41GwrGW. High power toggle and 5V 3A buck converter for USB. It will last. #12. I took delivery of another 32V 5A Aiyima A07 on January 19, 2023 from Amazon (USA) and the markings on the capacitors read 'Samwha' SD 2200 uF 50V 85 (degrees) C. Dec 20, 2022 · Yeah, I wish Aiyima would offer a truly improved version of the A07 with higher-quality caps, better heat separation via a larger case, improved Op-amps, integral power (like the SMSL AO100), subwoofer outputs and ventilation holes in the case. i recently bought two; they replaced very nice amps in my active 4-way system - a pass f2 clone and an upgraded almarro a205a mkii. this was when playing music through a cheap dac connected between a old blu ray player and the amp via a coax cable Feb 16, 2022 · This is a review and detailed measurements of the AIYIMA A300 stereo amplifier with balanced and Bluetooth inputs. In fact, better sources and other upstream equipment upgrades will clearly come through. It still is active and fully supported, also for new designs. 8. Jan 1, 2021 · The advantages of this type of PS is you can feed up to 3 devices with the same PS. As you see the distinguishing factor from some of the other Aiyima amplifiers is inclusion of tone controls. 5mm connector is Line Out, it is possible that one of the 5 OP amps serves for that line output. There are great class AB (eg Benchmark AHB2) and great class D (eg NC or Hypex etc based amps reviewed here) and of course badly engineered ones of each class. I think they need to start somewhere and even if it's fantasy it's still getting experience. 99. Nov 26, 2023 · This seems to confirm that the standard power supply of the A07 Max is indeed very poor, with its power being far from what they claim. Alas, that is also where the problem Nov 26, 2023 · Therefore, consideration must be given to reducing capacitance depending on the circuit voltage used. Mar 1, 2022 · 2. #9. Jan 7, 2021 · I tried swapping the original 5532 op amps for OPA2134 (purchased from Amazon) and amp sounded noticeably worse with the 2134s. Jan 1, 2021 · Drok 48V, 10A SMPS, running at 45V, to power both and mount the whole thing on a . Joe Smith said: Looking for advice/counselI recently purchased an Aiyima 04 amp with the standard TI NE5532P op-amps. The existing A07 and A07PRO of TPA3255 can use 48V10A power board, 4ohm 240W*2 distortion 10%. ” It’s at $130-135 on AliExpress and Aiyima store. The amps and chips are great. That was at 4 ohms, so it goes down by 1/2 into 8 ohms. If you like the video I recommend you subscribe to the channel. The other, a bit more expensive, comes with the LM4562NA op amp. Nov 26, 2023 · I agree the fosi v3 looks nicer than the aiyima a07 max. Aiyima A07 power amplifier excels in performance. Mar 8, 2024 · I think it's cool that they get their feet wet in electronics by OP amp rolling Aiyima amps like the A70 and checking out the PCBs and whatever they do when inside there mucking about. Some soundstage improvement as well. after getting it set up the first thing i noticed was a channel level imbalance. Sep 28, 2023 · Replaceable Op-Amp Chips:OPA2604AP, OPA2134, MUSEO1/02/03, LME49720NA, LM4562, AD827AQ, etc AUX OUT: active subwoofer or power amplifier 3. The OP amp is powered by a ±12V dual power supply, and the performance of the op amp will be more fully utilized, with better dynamics, and more details at the same time. I decided to start making videos in English. My review of the A09: ( tl;dr don't buy it) For the price, the overall sound quality is better than I expected, but this unit is not usable due to some major design issues. Jan 9, 2024 · AIYIMA A70. For those who want to do just that, it is difficult selecting which op amps to “roll with”. There is an indicator which lights up green when the unit is operational. Using with a 24v/5a power supply. Dec 29, 2023 · Are there any measurements yet for this amp, looks good, or any comparisons i've heard the aiyima A07 would the fosi compare to the aiyima ? How does this amp work, is it two tpa3255 chips, one for each channel Jan 7, 2021 · So this would probably be my final contribution to A07 measurements. Nov 24, 2022 · I have changed the op-amps on my Aiyima A07 Pro for some 1612's, the main reason actually was to go about trying to modify some components as practice, and also because I have been told that some components used by these brands are of really poor quality and/or imitation. One comes with the NE5532 op amp. They did sound a bit harsh when 1st connected to the tang band w8-1772's in my oris horns, running from 175hz-7khz. I have made a thorough THD and IMD vs. Jan 7, 2021 · You better spend your money on a tube preamplifier because people say tube changes sound. And I have both (unmodified/stock) and I prefer the way the A07 Max sounds in my particular setup (12x12 room, AK4499EX based DAC, Swans DIY3. Jun 2, 2021 · 2,804. 3. Mar 28, 2024 · Italy. However I ordered it without the powersupply, because I want to use a higher quality power supply than the bundled unit. Aug 20, 2022 · AIYIMA A08 Pro. The white frame of the push button on the front panel and the feel when the push button is pressed feels cheap. ”. vr wz xu ob un sf ua ga tt nv