MIDISID

The SID (“Sound Interface Device”) was designed for the 1982 Commodore 64 home computer. It has a very distinctive sound that is still loved today. It has a choice of waveforms and envelope generator per voice and advanced features such as PWM, filtering, ring modulation.
IDISID uses two such chips (modern recreations) to give six voices altogether, that can be combined in different ways. Four modes allow you to compose music in a DAW or standalone sequencer, play in .mid files or plug in a controller such as a MIDI keyboard. You can choose from preset sounds or dive into the parameters to create your own sounds.

It’s user interface.
Obviously you can fit dual SIDs into a Commodore 64 (or emulate that setup) but my frustrations were the clumsiness of running an original C64, and the control – I wanted an easy-to use menu system and multiple knobs – for controlling ADSR at the same time, for example, or the filter parameters

Hooking together three of them for 18 voices and thus cover all 16 MIDI channels

This may be the basis for a future product