Description Overview / Specification : op-amp based signal buffer prevents signal loss in effects chains gives back presence and assertiveness to the overall sound Solid metal housing 6.3 mm mono in/output jacks power supply via optional 9V DC Adapter, 2.1 x 5.5 mm barrel, polarity (-) center battery operation not supported dimensions (W x D x H) 74 mm x 42 mm x 33 mm weight 92 g