BassMatrix by Witech



BassMatrix by Witech is a Virtual Instrument Audio Plugin and a Standalone Application for Windows. It functions as a VST 3 Plugin and a Standalone Application.

BassMatrix is a synth that trying to sound like the classic TB-303 bassline synth and provide a simple interface to program the patterns. You can use MIDI PLAY to play any note and you can use KEY SYNC to get an arpeggio like syntesizer. Normaly you want to use HOST SYNC to sync with your DAW and change the patterns with MIDI notes. There is also INT. SYNC that is useful when you play the synth standalone (there is a loop size knob for this purpose so you can automatically change patterns in live mode).

The instrument is created with the DSP code from the open source project open303 ( The implementation uses IPlug2 open source project ( to interface with computers and DAW’s. This BassMatrix instrument is also open source, so if you have a bugfix or feature please commit it to the open source project so we can improve it. As stand alone you can program 24 patterns and loop through them.

Test it on the web first ( before you download.

No own website




Musician since about 45 years(various flutes, synths) Composer since 1986 admin of the forum + blog Music-Society

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