AIYIMA B07 Bluetooth Amplifier 2.1 Channel HiFi Stereo amp,300Wx2+300W TPA3255 Chips Subwoofer Amp with Bass Treble Controls,Dual Power Interface Design for Home Desktop Bookshelf Speakers

I've been playing thru this AIYIMA T2-PRO for a week, and so far, I'm impressed! This is ideal for a small desktop or bookshelf setup driving two small speakers. The tubes don't really color the sound too much, which is nice. It's a welcome feature to smooth out the edginess of a digital Bluetooth signal, but it's not so prevalent as to alter the sound of vinyl.I'm running this in my living room (~300 sq ft / 90 sq m) with a Pioneer PL-518 turntable, an Art DJ Pro II phono preamp, and Micca MB42x bookshelf speakers. This amp goes loud enough to completely fill the room with sound, but it's not cranking out the level you'd envision at the advertised 100w per channel. I believe the volume is attenuated internally so it doesn't go loud enough to distort, as these 3116 Class D amps often tend to do. I also have a Lepai LP-2020a+ and an SMSL SA-60, and they both get louder than this amp, but with a lot distortion at higher output levels. This one is crystal clear with the volume maxed, albeit with less of a max. This amp will not fill a house, but it will definitely fill a room.Bluetooth connectivity is solid, but with some small quirks that are easy to navigate. My phone finds and pairs the device easily, and when connected the range is decent. The connection gets choppy after about 35 ft / 10m, thru 4-5 walls. I'd estimate you'll get a solid 40-50 ft without obstructions. After leaving the signal radius for more than a few minutes, my phone will not automatically reconnect and transmit audio to the amp. I need to reselect the device from the list of paired devices in my phone to get audio again. While this seems inconvenient, I actually prefer this so I don't suddenly get whatever happens to be playing on my phone coming thru the living room speakers when I leave the house and come back. And even more so considering some devices auto connect and auto play, even though the video or song was previously paused! Imagine the potential embarrassment! :-P This may be mildly inconvenient to some, but I would much rather tell it to connect than to disconnect.EQ on the front is ok. It works and I use it, but it's a pretty basic shelving-type sound and nothing to get excited about. I don't mind that it's there and I don't mind that there's no bypass. All equipment at this price point colors sound in some fashion, so having a non-removable EQ in the signal path doesn't bother me. It's easy to find a sweet spot somewhere in the center and let it sit there. And it's helpful in tweaking generally-bright or generally-dark sounding records.Overall, the sound and functionality is great. The tubes look groovy lit up. It's got an on/off switch if the glow bothers you in a dark bedroom. It's got a solid, professional look and feel to the build. The sound quality is excellent - clear and powerful for its size, with nice channel separation and open soundstage. If you're looking for a small, 2-speaker amp for a desk or single room application, this is definitely worth checking out!

I've been using little Class D amps for awhile now. I've stuck with the tpa3116d2 because it is easy to find, fairly powerful, and sounds pretty good for the price. Mainly, I've stuck to the boards in a box with no power supply. I buy them for some DIY fullrange driver desktop speakers I make and the amp is plenty powerful for them with at smaller power supply. When we decided to move my larger bookshelf speakers into the living room upstairs, I needed another amp. Space requirements dictated something small but good looking. I wanted something with Bluetooth capability and a physical switch to toggle between the Bluetooth and the Aux in. This little amp met all my requirements with strong output, a decent wattage PSU, and good looks. However, knowing the limitations of the previous tpa3116d2 amps I've used, I had my doubts they would adequately drive my larger bookshelf speakers. These are ported and go down to 40hz easily with authoritative bass on my main system. With 6.5" woofers and low sensitivity, about 87db 1w/1m, I was concerned this little amp would sound thin. It does not sound thin at all. The bass is taught, articulated, and nicely present. Vocals are open and natural, and the top end is detailed without being crisp. The amp is not a party amp, and it won't blow the windows out of the house, but for average listening levels, 75-85db for me, it is more than powerful enough. I also have this hooked up to the TV for nice sound while watching or when we're streaming Spotify off the TV for background and it performs well above its pay grade. Imaging is nice. In my room it produces a fairly wide soundstage and images quite nicely.I should note there were a few problems to start. I purchased a Amazon Warehouse unit that was described as "Used-Very Good" noting that there was minor cosmetic damage and that the packaging would be damaged. I'm good for a deal, and I thought a little scratch or mark was worth the $15 I was going to save. No biggie... Welp, when the package arrived, most of the packaging in the box was missing, and the tubes had been left to roll around in the box. So, you can imagine what the inside of the box looked like. Two absolutely shattered tubes and glass fragments everywhere. This was disappointing to say the least. Amazon however did well and made it right. They provided me a credit which I used to purchase a matched set of GE JAN5654W tubes. A couple days later, and I was up and running. I would be interested in hearing the amp with the original tubes that it came with however as this is the first tube amp I've had. I would be interesting to see if I could hear a difference. Also, my amp came with a 24v 4.5 amp PSU rather than the stated 19v 4.7amp PSU. Not disappointed there as the amp is rated for up to 24v 5amp.Regardless, I'm super pleased and am enjoying listening to my speakers through this amp.

This is a nice little amplifier. I was comparing it to the Aiyima A08 Pro. It seems to have a bit more body and I do feel like clarity and slightly better details. In the background. It definitely shines when connected to an external source. It definitely is nice to have an Amp that can also power a passive sub. I like the amount of power in the form factor. It can get a little hot though.