This Gallien-Krueger MB Fusion 800 is portable and powerful! With its modern design and aluminum chassis, it weighs in at only 5.5 lbs. Three 12AX7 tube preamp and switch mode power amp and supply deliver a massive 800 watts of power at 4ohms. Temperature controlled fans keep the amplifier cool delivering only the required amount of air, reducing noise and dust intake. Effects loop capable and tuner out option. This unit is in good shape with a few moderate dings and scratches to the aluminum chasis *see photos. The two handle bars are a little loose. All of the knobs and switches function appropriately. Power supply included. Features 800 watt bass amplifier head with all-tube preamp 4 band Active EQ Dual Gain settings 14dB Pad Boost switch