Vox AC30C2BC - Black Comet Tube Complement: Preamp: ECC83/12AX7 (x3) Power amp: EL84 (x4) Output Power: 30 Watts RMS into 16 Ohms ; Speaker: 2 x 12" 8 ohm Celestion G12M Greenback Controls: NORMAL Channel: Volume, TOP BOOST Channel: Volume, Treble, Bass, REVERB: Tone, Level, TREMOLO: Speed, Depth, MASTER: Tone Cut, Volume Inputs: Normal input jack (high and low), Top Boost input jack (high and low), FX RETURN jack, Footswitch jack Outputs: External loudspeaker jack, Extension loudspeaker jack, FX SEND jack