BASS HEAD AMPLIFIER The new and redesigned Terror Bass head means the return of a modern classic. 1 channel. Hybrid bass amplifier, tube preamp and transistor power stage. 500w 4 Ohms, 250w 8 Ohms. Based on the iconic AD200. Class D amplification. Same front as the original version. New Clean Switch. Pad switch for active bass (6dB off). Effect loops. Limiter at the rear. Ground Lift. Dimensions: 36.5 x 21.5 x 24.5 cm Weight: 4.65Kg.