Seymour Duncan Vise Grip Compressor, compressor for electric guitar, from subtle adjustments of dynamics to fat and intense compressor effects, Soft-Knee characteristic (from 1:1 ratio to > 20:1), Voltage Controlled Amplifier (VCA), Max. compressor gain: +50 dB, Adjustable attack time (from 2 to 50 ms), Adjustable sustain, Uncompressed signal can be mixed together with the compressed signal via blend knob, Mid/Full/High-switch toggles between different sound characteristics, Volume control with boost reserves - ideal for solos, Current draw: 21 mA (operation), 19 mA (bypass), Power: power supply optional #108096 (not included), Dimensions (L x W x H): 127 mm x 66 mm x 37 mm, Weight: 304 g, Made in USA