I’m selling my Stax SR-404 Limited Edition, headphone only (no box). Unfortunately, the first owner saw fit to discard the box. I’m the third owner.
Cosmetically, the cable markings are partially worn off and the headband has a few scratches visible under the right lighting. The condition of the drivers and ear pads is very good, so the sound quality is perfect. See more pictures here: https://imgur.com/a/EDaFgdl
No smoking, no pets, no Covid
This unit has been measured on an industry-standard GRAS 43AG rig, courtesy of oratory1990. Here’s the frequency response graph: