Ampeg SVT 4 Pro

RMS Power Output: 300-Watts x 2/900 (mono-bridged @ 8 Ohms)

RMS Power Output: 490-Watts x 2/1200 (mono-bridged @ 4 Ohms) 

RMS Power Output (2 Ohms): 600-Watts x 2

Preamp: Tubes (3 x 12AX7)

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 x 2 Pre/Post with Level

Effects Loop: Yes x 2

Preamp Out/Power Amp In: Yes x 2

Dimensions (W x H x D inches): 19 x 5.6 x 15.5

Weight: 39.5 Pounds