Orange Terror Bass 1000 - 1000-Watt Bass Head Orange Controls: Volume, Bass, Middle, Treble, Gain, Active/Passive Switch Single channel, hybrid  Class D Mosfet power amp with valve preamp (2 x Ecc83/12ax7), variable input sensitivity for active or passive basses, balanced DI out, FX loop, Switchable Impedance 4 or 8 ohms (Speaker output options: 1 x 8 ohms, 1 x 4 ohms, 2 x 8 Padded Gig Bag 1000 Watts RMS