In Reply to: Koss ESP/6 find at Goodwill but... posted by popsy on May 16, 2016 at 15:44:40:
If it's an electret headphone, it will need step up xfmrs. likely in the switch box.
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Follow Ups
- RE: Koss ESP/6 find at Goodwill but... - hifipaul 21:13:06 05/17/16 (0)