Ampeg SVT 3 Pro

RMS Power Output (8 Ohms): 275-Watts
RMS Power Output (4 Ohms): 450-Watts
Preamp: Tubes (3 x 12AX7)
Driver Tubes: 1 x 12AX7, 1 x 12AU7
Power Amp: Solid-State
Tone Controls: 3-Band
Mid Tone Control: 5-Position
Graphic EQ: Yes, 9-Band
Ultra Low/High Boosts: Yes
Balanced Line Out: Yes, Pre/Post with Ground Lift and Level
Effects Loop: Yes
Preamp Out/Power Amp In: Yes
Dimensions (W x H x D inches): 19 x 3.5 x 15.5
Weight: 26 Pounds