I have the 150. The sound is decent but does not blow me away, probably because there doesn't seem to be any way to adjust EQ/tone for streaming music without doing it from the streaming device. Changing things on the amp or in the app only seems to affect guitar tone. No real manual available currently, so I have no idea whether that's correct/intentional or if I've just overlooked something.
It's certainly a hell of a lot louder than my other bluetooth speakers.