We offer our Dual Output digital power supply with 3 different type of foot pedals & Clip or RCA power cord. Dual Output & Liner/Shader Switch Adjustment Digital Tattoo Power Supply. You can run 2 machines at the same time. Just flick the switch to a Liner or Shader. You will never have to unclip your machine or readjust your power supply. 18 Volts Max Output 1.5 AMP 110-220V (Can be used in USA and International) Foot Pedal Available - Ultra Thin, Standard, & Gem Pedal. Power Cords Available - Hard Spring Clip Cord or RCA Cord. Pedal & Power Cord Lengths - All have a 7.5 feet long cord.