“Got a vintage Yamaha TX81Z FM Tone Generator (their words, not mine) here. Better known as an FM synthesizer. Considered by some as a “poor man’s DX7″, it had 4 operators, where the DX7 had 6.
BUT – the TX81Z had 7 more, somewhat more complex waveforms available, whereas the DX7 only had sine waves. It was also a contemporary of the DX21/27/100 series, and could share patches with them (though not all parameters translate between them).
This unit sounds great, and all controls work as they should. There are some dings and scrapes, and the right rack ear is bent somehow (see the pics). The original manual is included, lovingly annotated by the original owner (not me).” Click here to visit listing on eBay