Harley Benton Micro Stomp Rated Boost, effect pedal for electric guitar & bass, pure warm 20db clean boost that enhances your volume while maintaining the original sound, true bypass for eliminating signal interference when switched off, solid metal chassis, high frequency EQ control, low frequency control, output volume control, gain control, on/off switch with status LED, jack Input & output, requires 9V power supply (not included, optional #108096), dimensions 73(H)*43(W)*50Germanmm, weight: 220 gram