Compact 10-watt Roland Guitar Amplifier CUBE-10GX with custom-designed 8-inch speaker Three preset COSM amp types: Clean, Crunch, and Lead Replace preset amps with custom COSM amps via the free CUBE KIT app for iOS and Android devices Three onboard effects: chorus, delay, and reverb (including plate and spring reverb types) Bass, Middle, and Treble tone controls Rec Out/Phones jack provides high-quality direct tones for quiet practice and recording Roland Guitar Amplifier CUBE-10GX has Aux In jack for jamming with an external music player