Monoprice 40-Watt 1x10 Guitar Combo Amplifier - Black with Spring Reverb, 10 inch 4-ohm Speaker, High & Low Inputs, Headphone Output For Electric Guitars 40-watt amplifier driving a 10-inch, 4-ohm speaker 60 Hz to 12 kHz frequency response 3-band equalizer (100 Hz, 1 kHz, 3 kHz) 0.5% total harmonic distortion Volume controls go to 11 for that extra push over the cliff to really send the audience into a frenzy!