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This is interesting, but perhaps the author should also post the serial number of the DX-7 unit used. :-)

I can't remember the details, but early serial numbers have a slightly different sound. They also had slightly different MIDI protocols, including something like a heartbeat. I know because I own a more recent unit.

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I think it was something about having 8bit waveforms.

the dexed plugin allows different bit depths. There were a lot of FM synths from yamaha from the DX5, DX7, DX7s, DX7II and they all had differences in one way or another. The user Power DX7 on youtube has some really in depth looks at the sonic differences between dexed and his dx7s. He also has some great intros into how FM synth works, which had eluded me for a long while. I gave my dx7s away, but sometimes I think about getting a korg volca FM to replace it.

linear through zero FM is a huge mystery to me.

It sounds amazing though!

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