Your phone is already in your pocket. GO Guitar turns it into a guitar amp, a practice rig and a recording front-end — without the hum, hiss and impedance mismatch you get from a standard headphone-jack adapter.

Plug your guitar in, plug your headphones in, and route a clean signal into whichever app you trust. Bus-powered, gig-bag-pocket sized, silent enough for late-night practice and clean enough for ideas that end up on a record.