Roland Micro Cube GX 3W 1x5 Battery Powered Guitar Combo Amp Black Power: 3W Ultra-compact portable DSP guitar amp with 5-inch speaker Runs on battery or AC power (adapter supplied) and includes carry strap i-CUBE LINK jack provides simple audio interfacing with Apple's iPhone, iPad, and iPod touch (interface cable included) 8 COSM guitar amp models including JC-120 and a special mic preamp model