for sale is a near-mint condition Koss ESP-950 electrostat headphone
with the E-90 energizer and all original accessories for $sold..
i am the second owner of this set. it has no issues and no hint of
the infamous "squealing". oh yeah, it has the life-time warranty
from koss in wisconsin.
i'm not interested in trades; working to move up to the sr-009.
i will sell to international members but i won't send to mainland china
nor italy; the customs service is notorious for confiscating/arresting
audio equipment without any explanation, nor do they return them.