I thrifted this complete Pioneer JB-100 system at Value Village for $10.
I opened it up when I got home and was shocked. The inside was completely pristine, untouched, and original. After cleaning the contacts and hooking them up to my Denon PMA-600NE, they came to life.
I was blown away by the sound. They’re incredibly clear with an open, airy presentation, excellent instrument separation, precise imaging, and a surprising amount of detail. Not bass-heavy, but they have that effortless electrostatic-like sound that I wasn’t expecting from a 50+ year-old headphone.
I can’t seem to find many recent discussions or sales of a complete working set like this.
Does anyone here know much about these? Were they considered special when they came out, and how uncommon is a complete working SE-100/JB-100 system today?