I'll tell you in a few words. The amplifier is only worth it with a mobile phone as the Tonebridge app has thousands of ready sounds for you to play. Alone, it doesn't say anything, especially the distortion is mediocre. It also comes with a special cable for connection. HOWEVER... BE CAREFUL. With Android, there are compatibility issues, sound lag, etc. (latency). Only with iOS can you take advantage of this feature (check out related videos on YouTube). The build quality is good, as is the design. It’s perfect for my living room. It also has some clips to screw on to put a strap and carry it on your shoulder along with the guitar (however, there is no indication/instruction anywhere showing where to screw on the amplifier). The Bluetooth is a nice addition. It’s not suitable as a speaker if you have high demands. The sound lacks bass. The batteries last quite a while (note that it doesn’t come with a power supply). The rotating knobs have a nice feel. Plus, there’s a three-month free subscription for Ultimate Guitar. To hear it, find the account LSDiv on Instagram. I have uploaded dozens of videos

Guys, it's very good for the money. It has perfect sound (for its price I would like a bit more bass but still it's enough) and besides that, it has Bluetooth so you can put on a backing track and play over it. As you can imagine, it also works as a speaker due to the BT, but the sound then is not at the maximum it can reach if you want to listen loudly, and generally better than this speaker I would suggest connecting your phone with a 3.5mm jack cable to it. Finally, the 6 AA batteries it takes last a long time; personally, with a little daily use, it lasts about two to three months.