Bought it in order to amplify my electric and acoustic guitar where portability is needed. Of course it doesn't sound like a 4x12 cab, but that would be quite stupid to expect. Although the power rating is only 10 wats, the speakers are pointing upwards and emphasized are the mid frequencies, so it sounds surprisingly loud.
The clean channel got quite nicely along with my distortion and drive pedals and even with the Zvex Fuzz Factory. The crunch and lead channel, not so well. At least I couldn't get good results when boosting the crunch channel with my Tubescreamer copy. Fortunately the channels mentioned have plenty of gain in tap, so you just have to use the volume knob on your guitar and not the pedal in order to manipulate the gain level.
I gave handling 4 stars mainly due to the need for some extra Bluetooth thingy to adjust the additional parameters and settings.
Many people might consider the need for AA batteries a minus and would prefer the built in battery. However the former solution has a definite advantage when the battery dies and you have no plug-in power available.
So, overall a great portable amp!