Red Witch Grace Compressor, Analog compressor, from subtle to bold, operation via integrated lithium ion cell or optional standard power supply, charging via optional standard power supply with 9V DC; 2.1 mm barrel plug, polarity: (-) center, (e.g. # 108096, not included), Controls for compressor intensity and volume, Status-LED, 6.3 mm mono in- and outs, Dimensions (WxDxH): 90 mm x 30 mm x 45 mm, Weight: ca. 160 g