HeadAmp GS-X Mk2 headphone amplifier for sale. Working in great condition. Cosmetic condition 8/10 (A 2mm scratch around the boundary of top panel, see the last picture below). Silver panel, 120V A/C power input, original accessories and packing box included. Only ship to U.S. Buyers pay shipping and 3% Paypal fee. Welcome to local pick in Bay Area.