AIYIMA A70 Mono Power Amplifier with PFFB TPA3255 Mini Class D Amp with Subwoofer HiFi Home Theater Receiver with RCA/XLR/Trigger Input for Bookshelf Passive Speakers 48V/5A Power Supply

Brilliant, I'm using them as monoblocks

Tolle kleine Mono-Endstufe. Verwende zwei davon seit gut 1 1/2 Jahren zusammen mit einem WiiM Ultra im Wohnzimmer als kompakte Stereoanlage. Das ist eine für mich super passende Kombination, die viel besser klingt als der Stereovollverstärker zuvor. Gepaart mit einem Plattenspieler und zwei soliden Standlautsprechern ergibt sich ein kompaktes, gut klingendes Hifi-Setup.

Electronics engineer's review will be coming soon (tm) As a consumer, the A70 just works. It is a great amplifier with some really cool features I never knew I needed. As far as I can tell, it meets or exceeds all its specifications for TDP, power output etc. I will be evaluating this in more detail under different loads at a future date so for now I will cover more of the cool features: 1. XLR is a nice to have. I don't personally have any in my setup but occasionally I have used it for odd or specific setups. 2. The +6db is REALLY nice. Some audio sources are really quiet. The worst offender is an LG TV that automatically drops the volume every 30 minutes if you set it above a certain level in the UI. The trouble is, the TV doesn't actually know how loud the room is so this may be going from a comfortable volume to nearly silent. The +6db allows you to get the full range out if this amp with such sources. 3. The built in crossover is cool. Not used as I have a full equalizer for room calibration but I can think of times it would be useful. 4. The 12V trigger is awesome! I cannot wait to build a custom controller for this that allows it to be switched on and off with the rest of my setup to allow for energy savings. I really only have two gripes: 1. AIYIMA already has a product with the name "A70" which could be confusing. They also advertise this as being used for 7.1 surround setups, but having 8 of this seems like it would require excessive tinkering to get a room to sound good compared to an all-in-one receiver that is programmable.

Come al solito ho aspettato un pò prima di recensire. Che dire,lo sto usando con l'impianto HT in mono su un subwoofer con 2 altoparlanti 4 ohm da 25 cm messi in parallelo tra loro. L'apparecchietto,per le dimensioni, se la cava egregiamente: pilota il subwoofer alla grande,senza minimamente riscaldare. Si, lo consiglio!

Manque cruel de punch. Incapable d'alimenter un sub 12'. J'ai dû le retourner. Sinon objet joli.

Great amplifiers. I have tried quite a few amps over the years and these perform very well. The price to performance ratio is truly impressive. The A70's provide a wide soundscape with excellent detail retrieval and separation between the notes with a slightly laid back sound that I can appreciate. I also tested them using a set of older JBL speakers that have some slightly "bright" tweeters and I found that these Aiyima A70 Monos paired better compared to the Fosi V3 Monos I had connected previously. I am constantly very impressed with their sound quality. I then connected a powered Subwoofer and to my surprise I found that the Crossover knob on the back of the A70 worked better than the Subwoofer's Low Cut knob. I used a small screwdriver to make micro adjustments when dialing in the Low Cut on the 'Sub Freq' dial on the rear. A great feature that I was not expecting to use. I opened up the amp to inspect the build and immediately noticed that the A70 has a bigger and better heat sink compared to my Fosi V3 Monos, and they do indeed run cooler. There was plenty of power for my speakers and I only noticed a tiny amount of distortion at really high volume. I suspect that they may not sound quite as clean with really power hungry speakers at really high volume levels. I would easily recommend Aiyima A70 Monos and I am happy I bought them! (streaming Tidal, SMSL D0100 DAC, Mogami XLR Cables, 2 x 48V 5A GAN power supplies).