Crafted with features like a full, responsive three-band EQ, active and passive operation, and a Class D power rating operating at a hefty 500 watts, the Orange Terror Bass Head BT500H brings together an easy to transport size along with the earth-shaking tone you know and love from Orange. Fashioned in a lunchbox design to fit in even the most packed touring van, the 12AX7-based preamp blasts the big, mean sound that's kept players coming back to this company for decades.