I have to give it 5 stars. It is obvious a cheaper Chinese made item. The wire connectors are decent and sturdy. It is maybe 20 watts RMS per channel. My laptop connected right away and I was listening to a movie in about 5 min. With 5 inch bookshelf speakers, this thing is going to be louder and better than any set of computer speakers. Repurpose those aging bookshelfs that you don't use anymore. I can wholeheartedly recommend this Bluetooth amp.

This pretty little power house is quite impressive. It plays very loud before distortion sets in. I haven't played with it to assess durability, but it older bluetooth 3.0 sibling is still satisfying. Suggestion add rca inputs.

I am somewhat of an audio enthusiast and let me start by saying that this is one incredible and powerful little amp. I've recently completed a rebuild of some Polk Audio 6.5" outdoor speakers and bought this amplifier to power them. Let me tell you, the sound level is truly amazing. This amp really has some muscle and the sound quality is quite good. I did, however, have a slight issue and need to apologize to Douk Audio. I had a replacement unit sent to me due to Bluetooth audio dropouts and severe distortion. I thought I had a defective unit, but the replacement had the same problem. Come to find out, the problem is with my iphone 6. The iOS was recently updated to 10.3.2 and it ruined the phone's Bluetooth connectivity when connected via wifi. All of my Bluetooth devices now have audio playback issues. The Nobsound's Bluetooth function does work perfectly with my other tablets and wife's iphone 6 which has iOS 10.2.

The build quality seems pretty solid and I do like the fact that it accepts banana plugs. So far, the longest continuous playback has been about 1.5 hours and the amp only has gotten moderately warm playing at mid to low volume. I will be putting it through the paces soon. I plan on taking it to the beach along with my outdoor Polks that I previously mentioned. I'll be using a 12ah SLA battery with a 150W inverter for power. I've tested the set up and it works pretty well. I estimate the battery should last about 6hours using the supplied 5A power pack and pushing the amp below 50% volume. The beach will definitely be rockin' when I show up....ha!. Seriously though, in my opinion, having a set up like this makes a portable Bluetooth speaker obsolete. This is like having your home stereo with you anywhere you go, EXTREMELY loud with clear quality sound. I don't normally write reviews, but after seeing the other lack luster and not so good reviews, I had to chime in. I am thoroughly impressed and will highly recommend this Nobsound to anyone looking to power an extra set of speakers. I will definitely purchase another whenever this one goes out.

I was really surprised that this little amp sounded so good... i mean for $30US it does a fabulous job of driving some oldschool 100W shelf speakers at a decent volume with the included 12V x 5Amp power supply (12x5=60W) so you can apply up 40 more watts of power to get even more amplified volume....
i really expected to get a tinny, hollow, thin sound with all sorts of hum and other issues.... but this is nothing like that, it sounds pretty damn decent
i was able to power it with a worn battery pack from my drone a 4S x 10,000mah = 16.8V x about 10A so it can run this amp and house speakers at full power way in my backyard with no extension cord or house power supply required..... Perfect...
this is my review on DAY 1... if i encounter any issues, problems or observations worth sharing then I'll report back :)