- The smallest complete USB MIDI adapter you can buy.
- Live MIDI routes and loops with no computer. DAWless essential!
- Break off the sides and hide it inside old gear. Easy USB upgrade!
Buy with Shopify Here 🛒
$40 w/ case & DIN ports
$25 PCB ONLY, no DIN
Tiny MIDI USB-C + TRS A&B + DIN Adapter & Router
- So small the board fits in a GBA game case. Break off the sides to make it even smaller! Add USB to old MIDI gear.
- 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! With USB power, it will keep routing without a computer connected.
- 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 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! (6 RP2040 GPIO pads too, can be Arduino programmed by shorting the two Firmware pads)
Big Firmware 2.1 update adds onboard switching between 16 presets, Swing, more Round Robin tricks, Stutter (which also works as a Kaoss/time-machine style looper) and Looper Layers, which gives you undo/redo where you can add parts in-between. You can even double the loop length or delete specific notes without stopping the loop.
30-Day Test Drive Guarantee
If you don’t love it, return it for a refund within 30 days, excluding shipping.
One-Year Limited Warranty
(Including one replacement case)
Details subject to change without notice. 3D printed enclosures have minor unavoidable inconsistencies that do not affect function. If broken, your first enclosure may be replaced for free in the first year, shipping excluded.
What other adaptors can’t do:
• Route and remap MIDI without a computer.
• Give samplers the last-note-held memory that defines the feel of voltage controlled analog synth monophony.
• Control multiple voices on different channels with one keyboard.
Specifications
| Enclosure Dimensions | 10mm x 60.2mm x 34.2mm (35.16mm with jacks) |
| PCB Dimensions | 58 x 32 mm (34mm with jacks) |
| Weight with Enclosure | 17g |
| USB Port | USB-C with CC resistors to receive power and report as a standard compliant USB MIDI device on all USB-C host devices |
| MIDI Ports | 1/8″ TRS A x2, 1/8″ TRS B x2, 5-Pin DIN x2 (DIN only on enclosure) |
| Processor | RP2040 fully re-programmable with open source Arduino firmware |
| Power | USB or 5V in/out from board power tap pads |
| Optional expansion I/O | Pads for 6 GPIO pins. 14-15 for USB Host capability, 26-29 for digital or ADC |
| Enclosure | PETG with metal-reinforced DIN ports |
| LEDs | Red MIDI out, Green USB in/out, Yellow MIDI in |
| Button | Single momentary programmable multifunction button with some functions that toggle on/off. Hold while connecting USB in order to reset to Factory Default. |
Designs generations have iterative improvements. Specifications subject to change without notice.
Compatibility
Works with USB MIDI, TRS MIDI Type A, Type B, TS MIDI (1/4 inch adaptor not included), and standard 5-pin DIN MIDI.
Use Cases
Computer USB → FoxWizard → MIDI 5-pin DIN or TRS 1/8″ AUX
Keyboard → FoxWizard action button effects → synth (needs USB power)
Sequencer → FoxWizard with channel and note mapping patches → synth (needs a computer to program once, then only USB power is needed for it to run this program from then on without a computer)
TRS Type A device → Type B device (no power needed)
TRS Type A device → 5-pin DIN device (no power needed)
Old keyboard → internal FoxWizard mod → added USB and TRS ports
Repair
📖 How to Open the Case and Disassemble Your FoxWizard
30-Day Test Drive Guarantee: If you don’t love it, return it for a refund within 30 days, excluding shipping.
One-Year Limited Warranty, including one replacement case.
Shipping
Ships from Las Vegas, Nevada. Orders are usually printed, assembled and shipped within 48hrs, with tracking provided when available. In some cases we may temporarily run out of circuit boards locally, but new shipments come to us in 1-2 weeks. Your order should arrive to you within the contiguous United States in 1 week, but may take as long as 3-4 weeks in rare circumstances. We will give you a time estimate when we receive your order or feel welcome to contact us beforehand.
Oct 30, 2026 UPDATE: Big Firmware 2.1 update adds onboard switching between 16 presets, swing, more Round Robin tricks, Stutter (which also works as a kaoss/time-machine style looper) and Looper Layers, which gives you undo/redo where you can add parts in-between. You can even double the loop length or delete specific notes without stopping the loop.
Oct 23, 2026 UPDATE: Looper and Launchpad action, plus now firmware updates automatically through Patchling, so you only have to do a manual update once if you have a limited edition early unit.
Sep 25, 2026 UPDATE: First batch ready to ship.
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.
Aug 6, 2026 UPDATE: The PCBs are in, and it works great! Right now, we have the full planned adapter and router capability, final testing for bugs, and progress on the enclosure. The web tool to configure it as a router is now live HERE.
