I use it for guitar practice (+ tonex) and listening to music, I am quite happy with it considering the price. The audio quality is better than practice amps (Spark 2, Yamaha THR), this plus a ToneX One is even cheaper than Spark 2.
Cons:
1. The slight hissing sound: it exists when the device is on but not being used, but it’s not as annoying to me, I turn it off when not in use.
2. Startup time, it takes a few seconds to start, which I don’t mind
3. Mediocre build quality, the handle specially feels cheap.
But it sounds good, has bluetooth connectivity (for backing tracks, metronome, etc), battery powered, portable, and quite cheap for what it is. I literally couldn’t find any product that even competes with it feature wise.