Maintaining the size of the original Tiny Terror, the Terror Bass from Orange Amplifiers is a 500w hybrid bass amp head with a Class D solid-state power section and the AD200B twin-tube 12AX7 preamp.This Orange bass amp's diminutive size is quite deceiving, especially considering that underneath its sturdy and appealing housing lies an unbelievable 500 watts of class-D solid-state power, paired with a twin tube preamp. The result is a crushing bass power and tone that has put Orange bass amplifiers in a class of their own. The amplifier head features switchable impedance of 4 or 8 ohm, and includes volume, bass, middle, treble, gain, and active/passive switch for further control of your bass tone.Weighing in at just over 11 lbs., the Orange Bass Terror is a leader in ultra-compact and portable bass power. Its size makes this bass amp head ideal for traveling musicians. Take it on the bus, subway, in a backpack or on a bike to that gig, and rock out knowing the sound from this little Orange bass amp head is loud, and proud, and pumps out incredible tone. Includes padded gig bag.