Fender Rumble 350 Bass Amplifier Head 350 Watts @ 4 Ohms Solid state pre-amp with efficient class "D" power amp One channel with selectable overdrive Controls: Volume, Overdrive Gain, Overdrive On/Off, Overdrive Blend, Punch EQ Preset, Scoop EQ Preset, Bass, Low-Mid, High-Mid, Treble Auxilliary RCA Input for CD/MP3 Player, Drum Machine, etc.