garvalf says:
I believe the jack output mustn't be much better than the one on raspberry pi. For me it sounds rather ok. I could try to record something to hear the comparison. I'll also try to plug a cable for midi with the joypad, and I'll tell you (maybe not before next weekend).
In my opinion the pocketchip is funny, but it's not that useful, especially if you own other devices for making music. Anyway it's rather cheap so why not.