Expander · 6 HP
Multi-IO Expander
Three independent MIDI streams, two I2C ports, and extra buttons and an encoder for editing modes the front panel has no room for.
USB host, USB device and TRS-A MIDI run at the same time rather than one at a time: connect a class-compliant controller to the host port, a computer to the device port for a NerdSEQ MIDI device over USB, and outboard MIDI gear over TRS-A, all together.
The two I2C ports can each be leader or follower, for talking to I2C-capable modules such as the 16n, ER301 or Just Friends. The extra buttons and encoder knob unlock further edit modes and note-entry methods that the on-board controls do not have room for.
- USB host: connect class-compliant MIDI gear directly.
- USB device: a NerdSEQ MIDI device over USB, for direct computer communication.
- TRS-A MIDI, with DIN adapters included.
- 2 I2C ports, each leader or follower.
- Extra buttons and an encoder knob for further edit modes.
Not a standalone product — it works only with the NerdSEQ.
Specifications
| Status | Available |
| Width | 6 HP |
| Front panel | Black, grey, mix |
| MIDI | USB host, USB device, TRS-A |
| I2C | 2 ports, leader or follower |
| Included | Power bus cable, 12-pin MIDI ribbon, 2 TRS-A to DIN adapters, 2 Dupont cables |
Prices and stock are in the shop, so what you see there is always current. Local dealers are on the distributors page.
Which MIDI expander?
Only one MIDI expander can be fitted to a NerdSEQ at a time, so pick the one that suits the rig.
| Midi-IO | 2HP MIDI | Multi-IO | |
|---|---|---|---|
| Width | 6 HP | 2 HP | 6 HP |
| MIDI connections | 5-pin DIN in and out | TRS-A in and out | USB host, USB device, TRS-A |
| Third jack | — | Second out or thru | — |
| Streams at once | One | One | Three |
| Gamepad port | Sega Genesis | — | — |
| I2C | — | — | 2 ports, leader or follower |
| Extra controls | — | — | Buttons and encoder |
| DIN adapters | Not needed | 3 included | 2 included |
| Front panel | Black, grey, mix | Black PCB | Black, grey, mix |