- Jan 8, 2008
This is the pro-bias-only version of the SRD-P amp, which doesn't have the ability to run on batteries. It has been tested and is working fine. Also included are SR-30 electret headphones, which are also working and in pretty good shape. Price includes shipping/paypal fees in the continental USA. Shipping elsewhere will be extra.
I would trade for/toward other Stax headphones or Beyerdynamic T1.