Nobsound Class D Amplifier Mini Bluetooth 5.0 Receiver Compact Stereo Audio Power Amp with AUX USB Inputs for Passive Speakers

I've was very skeptical purchasing this. Initially I purchased Roxel BT150 from amazon. And then after testing it was returned. There was a static noise which I hate on amps that just shows its quality. It was cheap and the reviews were somewhat mixed on the Roxel. I didn't want to spend £150 on an amp. But after testing the Roxel... I thought I didn't have much choice. After some search..I found this little baby. Outer shell made of wood.. and reviews seemed to be good. This was orderd and within a day it was delivered. The unit is very small. sturdy and powerful. I been running some Phillips ribbon speakers from the 90s. and this one can spill out good sound. It is 2 channel. and pretty straight forward. Power and volume are on the same Knob.. you have line in or bluetooth connections. rear has the speaker connections. I also purchased a Sound blaster sound card that I always wanted and adding this to the mix.. The sound was amazing. This little unit can drive those speakers like any larger amplifier and some. My speaker setup is higher up. So the sound is much fuller and wider and has more depth. For the price. It is by far the best purchase you will have made. It is small enough that you will not notice much and simple enough to get the job done and can be left hidden on the desk. The unit does have funny led color lights that light up with the sound.. which is a bit annoying. But that's if you are a simpleton like myself. Otherwise it shouldn't be a problem. I would highly recommend this if you are running a set of speakers. Keep in mind.. At high volume over time it does get little warm. But this is expected.

Pleasantly surprised by this product. Very good value for money and unique look. Usb connection was very good as this isn’t featured in many other amps. First complaint is the look of the connectors on the back, would be better if they were just the regular wire/spring connectors. Second complaint is the fact there is no audio source switch or button. Despite these complaints I’d still recommend the amp as it’s feel, style, purpose and price are all fantastic, all things considered

This little amp is surprisingly easy to use. Plug in the power, then connect to your device. The best part is that it's not just Bluetooth, it also has a 3.5mm aux cable input, and functions as a USB audio device via the USB-C input on the side. Mode switching is simple - with no cables plugged in it defaults to Bluetooth, otherwise it runs off whichever cable is connected. The catch is that the amp needs to be powered on BEFORE you plug the cables in, otherwise it will just go straight to Bluetooth. I'm currently using it to drive a pair of old Yamaha speakers, and it sounds... well, not fantastic, but what'd you'd expect for a small Class D amp driving a couple of speakers that weren't really designed to handle any bass, so your mileage may vary depending on what speakers you hook up to it. Higher ranges sound OK, and I haven't noticed any clipping while listening to music. Audio volume via USB is super loud, so if you're using USB mode make sure you turn down the PC volume first before playing anything. Bluetooth shows up as MiniDamp, USB audio reports as JieLi BR21.

First thing that has to be said about this amp is just how cute it is which is a word i have never used when talking about anything audio its very very small about 2 inches cubed. Now even though its small it doesn't lack features and I can imagine would be useful in a number of different applications. On to the sound quality its good but im not comparing this to more expensive amps as it would be unfair i feel im just judging it on its own merits which are very good ive been using this with svs ultra bookshelfs which would not be the easiest speaker to drive but this little amp has surprised me at low to medium volumes its quite good if someone was looking to get in to audio cheap this is definitely worth getting i mean for the money could you really go wrong? To wrap up its worth a buy in my opinion something to mention is that there are lights that come on when when listening to music but their not in sync with the music so don't let that put you off what is otherwise a bargain.

Bluetooth is slightly less reliable than a Fosi Audio box I have which was about £80. I would recommend spending a bit more if you can for a box which you can adjust the treble, mid and bass on. This unit sounds OK to me (fairly flat response, which is what I want), but it would be nice to tweak to suit the speakers a bit. It’s a budget item but does the job OK.

As crisp and clear audio as you can get on a Bluetooth connection. The bass is a little light but it powers my bookshelf speakers perfectly and is great for gaming and watching films on. Certainly worth the money and much clearer and cheaper to run than the cheep bluetooth reciever and av amp I was using before.

Over all a very nice little item sound quality is very good amazing in fact for its size, it feels solidly built and well thought through. I took a educated punt as I had been studying mini amps for a while for a nice pair of Sony speakers I have now attached to my desktop. Very very easy to set up and very good value for money hope it will last a good while. Only grip I would have is that to switch between modes, (inputs = C type USB, 3.5mm Plug and Bluetooth) for instance if playing from my phone and my phone is plunged direct into the amp i.e. 3.5mm plug to 3.5mm plug each end one in the phone other in the amp to use the Bluetooth I have to unplug the lead out of the amp which if you haven't turned the volume down you get a loud buzzing from possibly touching the plug end. All in all for day one ...... so fare i`m quite impressed but time will tell as it will be used daily, come back in 12 months.

Does exactly what it says on the package. A little less LED-ness would be better, but that is par for the course for these types of product

I've just given one of these a quick test run, and am both impressed and happy. Using my phone as a source (via both 3.5mm jack and Bluetooth) and a pair of Voll P44 bookshelf speakers to listen to a few songs, this makes for a great and compact casual music listening setup. I'm not super familiar with the speakers, and my environment was far from optimal for critical listening, but the sound seemed fairly full, it reached both lows and highs without issue, and maintained a respectable sound field between the speakers. I'm confident that most people would be more than happy to listen to music with this. There's better sounding stuff, but it'll be a lot bigger or cost you a lot more. :-) For my small home office the volume easily went far higher than I would comfortably listen to, even with the included power adapter. When running at low source volume and high amp volume some hiss did come through, but it certainly wasn't an issue if I upped the volume at the source and put the amp at an upper-comfortable listening volume. I didn't do anything to rule out my phone as the source. Either way, the hiss was *far* less than in the other mini-amp I tried recently. I appreciate that having a 3.5mm jack plugged in disables the Bluetooth. This allows for simple usage without allowing anyone in Bluetooth range to take over your speakers (unlike many similar amps). The unit feels sturdy and well built, which I found surprising given the price. I haven't tried the USB, but all other plugs and jacks are snug and secure. The unit got a little warmer than the ambient temperature, but only a little. One significant thing to note, which is written in the instructions: you MUST plug power into the unit BEFORE plugging into the wall, otherwise it will spark around the jack when inserted. This is specifically why I gave only 4 stars instead of 5. Other stuff: Some printing imperfections on the volume knob. Some noise coming through when plugging in sources (pretty common) or when changing volume (very minor), neither of which seem a big deal. The volume level lights are bright, and don't match up to the music too well, so are pretty gimmicky.