The MIDIBass 303 is the ultimate MIDI retrofit for the classic Roland TB-303.

As you'd expect, MIDIBass allows the 303 synth section to be controlled by any MIDI keyboard or sequencer, including control over filter cutoff.

MIDIBass also transmits the notes from the 303's internal sequencer via MIDI - giving you the ability to capture the unique quality of patterns created through the TB user-interface.
This is ideal for further editing or chaining patterns on a PC or hardware sequencer, pattern backup, or doubling-up the 303 sound with another synth.

Installation instructions can be found on this page.