AIYIMAA08 PRO TPA3255 Power Amplifier Bluetooth 5.1 with VU Meter 300W+300W HiFi Class D Stereo Digital Audio Amp 2.0 Channel Amplifier for Passive Speaker Home AudioClimatePartner certified

Spoiler alert: Disregard the price, because this little amp sounds better than some amps costing 20 to 30 times its price. Buy one. Yesterday.I read and watched the various reviews (and IT HAS A VU METER!), and I wanted to see and hear for myself, so I decided to get one.From the first moment I fired it up, expectations were met and exceeded. This amp is one of the new breed of Chinese class D amplifiers, which is to say they sound nothing like the Class D amplifiers of a year or two ago. Using the best amp chip currently available (the Texas instruments 3255), they have the ability to pump out plenty of power for the needs of 95% of listeners.It was nice that it came with a larger power supply than the one typically available with these amps. This one had a 36-Volt 6-Amp power supply (for a total theoretical output of 216 watts across both channels, or 108 watts each. At normal efficiency, I would figure actual output at about 70 to 80 watts per channel into 8 ohms), as opposed to the standard 32-Volt 5-Amp (160 watts total, figuring for about 50 watts per channel into 8 ohms). Bottom line: it has more oomph.The AUX OUT port was also a very nice feature, as it means that you can run a powered subwoofer with this amp. Keep In mind that it outputs a full range signal, not just 80 Hz and below. Most subwoofers have an internal crossover, so this should not be an issue for virtually anyone.The Bluetooth is, like many of these amps, VERY eager to be used, so once it is paired, it will grab onto your phone automatically, anytime you are near. This will be good news for some, and bad news for others. It is easily solved by turning off Bluetooth on your phone. I ran the A08 Pro with a separate preamp feeding it, but it was also cool to be able to run it with no outboard DAC, no preamp, nothing but the A08 Pro itself, using only my phone as both the source and preamp. Bluetooth had very good sound, showing just how good of a built-in DAC it has, and when in a rush, it was fine to use. For the price, the built-in DAC is superb.The sound quality is nothing short of amazing, especially considering the price. I've got some very efficient speakers (97 dB, 8 ohms), and some very inefficient speakers (80 dB, 4 ohms), and the A08 Pro sounded amazing with both of them. There was PLENTY of power for my efficient speakers (Zu Audio), but I was wanting to know if there was enough for my inefficient ones (Magnepan). I didn't need to worry. The Zu towers easily topped 100 dB cleanly, and the Magnepans went cleanly up to 90 dB. I never push my amps to clipping, and 90 dB is louder than I ever use for critical listening, so there was more than enough power for any listening scenario. There was (of course) some hum and hiss with the extremely efficient speakers, and very little with the lower efficiency ones, which is true of virtually every amp on earth. This is to be expected when always running an amp with the volume knob turned all the way up. Having said that, it certainly does reduce the hum/hiss by far if you leave the volume knob between 9 o'clock and 12 o'clock (which I'm sure most people will do), whereas I always had mine turned up to 5 o'clock/100%.The EQ controls are right on the money, cutting or increasing the frequencies that virtually ALL listeners will want to adjust, and I never found the tone knobs to be deficient in any way. In fact, I was surprised by the fact that I LOVED them and their effects on the sound. I've got a (VERY) much more expensive EQ from Schiit, and I prefer the Aiyima tone controls.How does it sound? FABULOUS. This little amp has very low damping factor, and lots of 2nd and 3rd order harmonics, so it has some very tube-like traits in how it presents the music. For those who understand this sort of nerdy terminology, in tube amp terms, it sounds more like an AB push-pull than a single ended triode (SET). The soundstage is wide, separation is great, soundstage depth is similarly great, and it gives ZERO listening fatigue. I've sat for hours, going through my music library, enjoying every song, without ever tiring of the musical presentation.In short (and especially considering the price!!!), the Aiyima A08 Pro is one of those overachievers that blow your mind and reshuffle your perception of affordable Class D amplifiers. It's one of the best amps currently available that is attainable by virtually any music lover. It works with almost any speaker, and it just sounds GREAT. What more could you want?Highly recommended. VERY highly.p.s. I'm still CRAZY about that VU meter. It NEVER gets old.

Needed some amplification to power my front effects speakers in my Dolby Atmos setup. Also liked that it connects via Bluetooth, so it serves a duo purpose in my system. Enjoyed the clean sound coming out of my speakers in Bluetooth mode with more than enough power to keep up with my other speakers in Dolby Atmos mode. Like the illuminated meter but the needle only moves when the volume is turned up. Also, when I want to power my front speakers in Atmos mode I have to remember to turn off Bluetooth on my source device otherwise this amp will lock on the Bluetooth source if it is in range. The size of this amp is not large, so it did not take up much space on top of my other equipment and the aluminum body makes it a very light weight and sturdy device. Overall, truly enjoy the sound and the versatility this amp offers.

I use this amp to power my zone 2 room speakers. I have four rooms and each set of speakers is controlled by an impedance matching volume control. I had one of the Pyle amps for this purpose and it lasted 6 years. When that one quit working, I replaced it with an updated version of the same amp, but unfortunately, it didn't last six seconds before it blew up! Obviously, their quality control is not what it used to be... Went back to Amazon!So in looking for a better quality replacement, I found this one on Amazon and I'm not disappointed. This little amp looks great, is very small and the build quality is excellent. With the included 36 volt power supply this amp has way more power than my speakers can handle, but I'm sure that it's nowhere near the 300 watts advertised. 36 volts times 6 amps is 216 watts, so if you need more power from it, you're going to have to upgrade to a 48 volt supply which it says it can handle.The easy to use connections are all gold plated and seem to making a great connection. As soon as I got it hooked up, I ran it for more than 2 hours and it barely got warm. I'm only able to turn it up to about 40%, but the sound quality is excellent with great bass and all around fidelity. The Vu meter is a nice touch and indicates accurately for my purposes. We'll see how long it lasts, but so far it seems like a great buy.

There's nothing remarkable to my ears with this amplifier other than it works and it does its job. My most notable gripe is the power curve behavior of the volume control. With my Elac Debut B6.2 speakers in use, I can't get it past 10'o clock on the volume knob without getting them too loud. I got around this by controlling the volume through a separate DAC.