For Sale: Used RARE Vintage PANASONIC EAH-T40 Stereo HEADPHONES! Made in Japan! In good used physical condition.  Scratches, scuffs, marks from normal use/wear.   TESTED - audio output is finicky.  Sometimes it sounds scratchy, or not in both ears.   I only tested it in an old boom box, so I'm not sure if it's because of the boom box.   If I turn the AUX plug, I was able to find a point where the sound came out nicely.   I'm not sure why it does that.  Sold as-is.   Please refer to pictures for reference. Thanks!!