Chronovore

Michigan Synth Works' TB-303 sequencer in 24 HP: the 303's circuit recreated with modern parts, its keys and its TEMPO knob, a display and buttons in place of the 303's two rotary switches, and CV, gate and accent outputs to play any voice.

Key features

• Runs OS-303, the open-source 303 operating system (it can also run SuperOS-303); other 303 CPUs (Pixie, Quicksilver, Sonic Potions) fit but are not supported
• TRACK and PATTERN modes on buttons, the bank on a one-digit display: 1 to 6 for tracks, A to D for pattern groups
• ACCENT, GATE and CV outputs
• RUN (active high) and CLOCK (24 PPQN) inputs, normalled to the internal clock; a rear switch turns them into sync outputs
• MIDI input on TRS (type A or B) for MIDI sync and start; MIDI out (TRS A) on the back
• Slide time in four lengths, from the 303's to really long
• PSIpower: the power header takes the ribbon either way
• In a silver or a black panel