This is a Brand New Orange Kongpressor Optical Class A Compressor Guitar Pedal. It is an Analog Pedal with one 1/4" Input and one 1/4" Output. Transparent Buffered Bypass Switching. 9V-12V DC Power Supply Sold Separately. Also takes a 9V Battery. FREE SHIPPING WITHIN THE CONTINENTAL UNITED STATES ONLY! PLEASE INQUIRE ABOUT SHIPPING COSTS TO ANY OTHER LOCATION!