Focusrite 18i20
The Focusrite 18i20 has 12 inputs and 16 outputs: 20 × Analog Audio, 2 × MIDI, 2 × S/PDIF, 1 × USB.
Inputs and outputs
Analog Audio (20)
| Port | Direction | Connector |
|---|
| Input 1 | In | XLR |
| Input 2 | In | XLR |
| Input 3 | In | XLR |
| Input 4 | In | XLR |
| Input 5 | In | XLR |
| Input 6 | In | XLR |
| Input 7 | In | XLR |
| Input 8 | In | XLR |
| Output 1 | Out | XLR |
| Output 2 | Out | XLR |
| Output 3 | Out | XLR |
| Output 4 | Out | XLR |
| Output 5 | Out | XLR |
| Output 6 | Out | XLR |
| Output 7 | Out | XLR |
| Output 8 | Out | XLR |
| Output 9 | Out | XLR |
| Output 10 | Out | XLR |
| Monitor 1 | Out | 1/4" TRS |
| Monitor 2 | Out | 1/4" TRS |
MIDI (2)
| Port | Direction | Connector |
|---|
| MIDI In | In | – |
| MIDI Out | Out | – |
S/PDIF (2)
| Port | Direction | Connector |
|---|
| SPDIF In | In | RCA |
| SPDIF Out | Out | RCA |
USB (1)
| Port | Direction | Connector |
|---|
| USB-C | In | USB-C |
Word Clock (1)
| Port | Direction | Connector |
|---|
| Word Clock | Out | BNC |
Other (2)
| Port | Direction | Connector |
|---|
| Optical In | In | FIBER |
| Optical Out | Out | FIBER |
What it connects to
- Analog Audio in: 1,158 devices in the library can feed it.
- Analog Audio out: 1,152 devices in the library take it as an input.
- USB in: 429 devices in the library can feed it.
- MIDI out: 119 devices in the library take it as an input.
- MIDI in: 102 devices in the library can feed it.
- Word Clock out: 76 devices in the library take it as an input.
Use the Focusrite 18i20 in a diagram
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Port data from the Patchify gear library, last updated 25 January 2026. Report a correction