I've noticed a similar problem with my 150 where it seems to disconnect from my iPad when I crank it up. It also pauses when I switch to,another song. It plays the first few seconds of the song, then stops while it loads the tone. I have to hit the play button several times for it to keep playing the song which can be annoying sometimes. While it is irritating, I love the tones and am pleased overall with the amp. I'm using it more to noodle around and practice with and not for playing live.