Blackstar HT-1RH 1-Watt Guitar Amplifier Head with Reverb 1 Watt, all-tube amplifier head with Reverb Tube Complement: 1 x ECC83 (12AX7), 1 x ECC82 (12AU7) Power Tube Volume, Gain, and ISF Tone control; Overdrive switch Emulated Speaker /Headphone Output; 8 Ohm speaker output MP3/Line input