I have a good pair of Stax Sigma very early serial number 70! These were modded by Mjolnir Audio who 8 bought them from for $2000. These have the most speaker similar soundstage of any headphones or earspeakers as the drivers are in front of and face your ears! Some light wear to housing see photos. Some discoloration of the foam dampening. You get new dampening material when you order earpads. Earpad condition is good. Cable is good. Sound is really something, no other headphone presents the soundstage in front and so deep like speakers.
$1349 shipped in the USA only for sale only
I can ship Fridays