T9 PRO 200W Bluetooth Amplifier HiFi Digital Class D Power Amp 2.0/2.1 Channel Vacuum Tube DAC Amp with VU Meter & Bass Treble Bluetooth 5.2 Coaxial Optical PC-USB inputs (AIYIMA T9 PRO)

I've been doing a lot of research on small class D amplifiers and after too many hours I settled on the T9 Pro. I am using my PC as the source and wanted an amplifier with an integrated DAC so that I could output the signal digitally via an S/PDIF cable and let the amp convert the signal to an analog one. I also have a fair bit of high res audio files and am glad the amp can process up to 24 bit 192khz signals. I am using the T9 Pro to power a pair of KEF C55 speakers that are quite large bookshelf speakers with dual 8" drivers with the top one having an integrated tweeter. They are rated to 150w at 4ohms. Now with all the preamble out of the way... all I can say is WOW! It is beyond impressive that such a small amp can effortlessly power such large speakers. The sound quality is phenomenal! I started with a 24 bit 192khz version of Louie Armstrong's "La Vie En Rose". I was blown away by the trumpet during the intro. It felt like he was right in front of me playing and the separation of instruments and sound stage were both really impressive. Once the vocals started I was also really blown away by the clarity. I next played around with a mix of different genres (I have a pretty diverse taste in music) and I felt that it could handle everything from classical to rock. The bass felt a touch low for my taste but the included remote makes it a breeze to make adjustments to bass and treble. This will be up to personal preference of course. The T9 Pro ships with a 32v 5 amp power supply which equates to 160w. If you are using this with a computer, make sure to set the S/PDIF output to 24 bit 192khz so that you get the best quality possible (if you are playing high res audio). In summary, I cannot recommend this amp enough, the value is superb for what you get. As a note, my main home theatre setup is powered by a $3,500 Onkyo 7 channel integrated amplifier so I have a great reference point at a much higher price point. It really speaks to the efficiency of class D amplifiers and the quality of the Texas Instruments chipset in the ability of this tiny amp.

As an experienced semi-audiophile person, this amp has excellent sound quality. I have been the owner of multiple amp and speaker systems from the 70's until now. Several things make this unit standout ... namely the sound quality, build and small size of the amp. The tubes look great and of course help give the audio good quality. I hear a slight amount of reverb on some music but cant quite put my finger on it. There is an excellent video on Youtube about the construction and testing these go thru. The remote is nicely functional, no non-working buttons and simple to figure out. I will test and compare with a vintage Pioneer SX1080 as soon as I can. Currently paired with some smaller JBL bookshelf speakers with about a 6 inch woofer (I'll update with the model number asap) . Good speakers will really sing with this amp. If you buy one of these and it doesn't sound good, think about upgrading your speakers. Bass is truly adequate but I think the high end could be a bit better. I will test with some Bose-901's, Dayton Audio B652's and some old Radio Shack Mach 1's for giggles. I steam Amazon music via small tablet using Bluetooth. That has been working and sounds fine but I do hear a relay click from the amp at odd times when there is no music playing. That has been noted on the T9 also -- not a huge problem but slightly annoying since the amp is close to my listening chair. A nice FM radio and another set of inputs would be icing on the cake. I'm not interested in changing the tubes but may shop for some spares as I have no idea how long they will last but with a low heater voltage and the mil spec, I would think they will last a long time. Updates to come, so far very good, I'm impressed and happy with the purchase. update - reverb was coming from a program I use to tweak the sound from my test tablet. JBL - older Northridge E Series E30 -- the current home for the amp. A great match, on the floor for now- will experiment with some speaker stands latter) . This setup got me back into truly "listening" to music again. I would like a hair amount more of high end but love this setup. Fantastic off center imaging. Starts clipping at about 85. 901's - (with out the EQ) - Best I've heard these speakers sound yet. Not as efficient and had to play the amp at higher volume to get descent sound volume but also sounded great. The amp played at louder settings with out clipping ... This was the best match up for the loudest DB's. 301's but they didnt sound near as good but I didnt have time to tweak. But again .. it drove them just fine. Great sound stage. Mach 1's - I've replaced the 15's (I forget with what) but they totally brought out the tube "warmth". No muddling or over powered bass. If I had room in my listening room, this would be my go to speaker. Clipping before they got too loud . Dayton Audio B652-- 6.5 inch woofer holds it own. I switched to them after listening to the Mach 1's and it was like night and day bass wise lol. Still pretty good but the JBL's have them easily beat. Very nice image separation and nice high end. Very fun playing this with ANY speaker. If you want LOUD, this is not your amp. But if you'd rather have 35 or so watts of great sound. Check this amp out. I'll compare the Pioneer soon. I suspect it will keep neck and neck until the power goes past the T9's abilities. VS Pioneer sx1080 - Dixie cup to Stanley ... the bigger receiver just plain has more power. The Pioneer easily sounds better at low volume levels with better overall tone but its not a fair comparison honestly but it was fun to compare the the same speakers ( some old Athena tower speakers). The T9 pro still sounded great though. Riverstone5654 tube update - slight increase in low end and channel separation. The Riverstone does a great job of packaging and documenting. I hear more detail and like the result. Seems worthwhile, but i cant see spending any more money on this unit. Hooked up a DVD player and connected it via the digital co-ax port. I have not used the optical port yet. That portion of the amp also works flawlessly and sounds great. Weeks latter - very happy, this little amp got me back into listening to music again. Busted out the old CD collection. Two things would be great, build a decent FM receiver to pair with this and add a headphone jack.

Excelente equipo, brinda un sonido extraordinario. Lo recomiendo ampliamente.

Simple and everything I wanted from an amp. Love it.

En las especificaciones de la app, indica que es de 200 watts de potencia. El manual que trae el producto dice 100 watts.. El prodicto es bueno; sin embargo, si se nota la baja potencia