Roland Micro Cube Guitar Amp - White Controls - TYPE Switch, GAIN Knob, VOLUME Knob, TUNING FORK Button, KEY Switch, TONE Knob, EFX (Chorus, Flanger, Phaser, Tremolo) Knob, Delay & Reverb Knob, Power Switch Ultra-compact DSP guitar amp with 5-inch/2-watt low magnetic leakage speaker Runs on battery or AC power (adapter supplied) and includes carry strap 7 COSM guitar amp models including JC-120 and a special mic preamp model 6 DSP effects - chorus, flanger, phaser, tremolo and separate Delay/Reverb