[biz97]

For sale is a Matrix "M-Stage" Headphone Amplifier (2nd Edition) w/ OPA627AP Mod.  Amp is in excellent condition with minimal use. The amp comes with all accessories and original packaging, as well as the standard OPAMP.
 
All items originally purchased for $300. Asking price is $260 shipped.  CONUS only, though local pick-up in the San Diego area is available.  See pictures attached and thanks for looking.