Orange OB1-500 Bass Head, Electric Bass Head, Bi-amping, Power: 500 W, Controls for Master Volume, Treble, Mid, Bass and Drive, Low frequencies remain undistorted at higher gain settings, Medium and high frequencies are proportionally (controlled by blend control) separate by a drive circuit enriched with additional overtones, Bi-amping controlled via footswitch, Housing made of solid white 19"" 2U metal case, Balanced DI Out, Speaker Twist speaker connectors, Colour: White, Dimensions (W x D x H): 48.2 × 26.5 x 10 cm, Weight: 10.1 kg