Rack-mount Version: TG500
Yamaha also offered a rack-mount version of the SY85 called the TG500. It lacks the sequencer, floppy drive and continuous sliders but adds additional outputs, a further card slot of each kind (for four slots in total) and 2MB of waveform ROM for 50 additional internal waveforms for a total of 8MB over the 6MB of the SY85. It has four banks of preset (i.e. non-modifiable) voices (i.e. 252 preset voices and four drum voices in total) and two banks of preset performances (128 total) and only two banks of internal, user-modifiable voices (126/2) and one bank of internal performances (64). The TG500 lacks the waveform RAM of the SY85, but can be expanded with one or two SYEMB06 non-volatile waveform RAM modules. It also features 64 note polyphony, being one of the first commercial synthesisers to do so.
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