NEW! Made from new parts, this is a sound output cable for the TRS-80 Model I, III or 4.
Normally, you would connect the TRS-80 Cassette interface cable to an audio amplifier, but my cable is for those who don't want the other two plugs sitting unplugged.
For those looking for a compact audio amplifier, I recommend Radio Shack cat. no. 277-1008 which can easily be found elsewhere on eBay.