SUPER TINY MIDI TRICKS
MIDI TRS A&B USB-C Adapter & Router
- The smallest USB MIDI adapter you can buy
- So small that the circuit board fits in a GBA game case!
- Break off the sides to make it even smaller!
- Super easy web interface to program it. Route any channel to any other, pipe CCs, block messages, transpose, split, do mono/poly tricks, and way more!
- Configurable front button for on-the-fly panic, pitch bend, mod, octave, CC, or trigger note.
- 3 adjustable-brightness indicator lights gently fade in and out, rather than blinking distractingly.
- Works as a passive DIN to TRS MIDI A to B adapter too (no power or usb needed when used this way)
- For all TRS & TS MIDI types + our own patent-pending Half-DIN port for universal classic DIN compatibility. (MIDI only needs 2 of the 5 pins)
- Metal-reinforced high-strength PETG enclosure survives all squishes.
- Multiple hip colorways and custom color options.
- Easy solder pads if you want to put it inside an old keyboard or something that you want to add USB MIDI to. Perfect module for mods! (4 RP2040 GPIO pads too)
Easy to Program, Try It Out ➡
Aug 6, 2026 UPDATE: The PCBs are in, and it works great! Right now, we have the full planned adapter and router capability, but still testing for bugs.
The web tool to configure it as a router is now live HERE.
Sep 13, 2026 UPDATE: Enclosure is complete. Metal-reinforced PETG, snaps together without screws. It has the fabled half-DIN ports to allow old-school MIDI! 5 Pin MIDI only uses two of the pins, making this mini MIDI trick possible.
Contact me for a free first-run unit in exchange for a social media post or a video review I can share.
