Soundcraft Si Expression 3
The Soundcraft Si Expression 3 has 28 inputs and 16 outputs: 28 × Analog Audio.
Inputs and outputs
Analog Audio (28)
| Port | Direction | Connector |
|---|---|---|
| MIC 1 | In | XLR 3-Pin |
| MIC 2 | In | XLR 3-Pin |
| MIC 3 | In | XLR 3-Pin |
| MIC 4 | In | XLR 3-Pin |
| MIC 5 | In | XLR 3-Pin |
| MIC 6 | In | XLR 3-Pin |
| MIC 7 | In | XLR 3-Pin |
| MIC 8 | In | XLR 3-Pin |
| MIC 9 | In | XLR 3-Pin |
| MIC 10 | In | XLR 3-Pin |
| MIC 11 | In | XLR 3-Pin |
| MIC 12 | In | XLR 3-Pin |
| MIC 13 | In | XLR 3-Pin |
| MIC 14 | In | XLR 3-Pin |
| MIC 15 | In | XLR 3-Pin |
| MIC 16 | In | XLR 3-Pin |
| MIC 17 | In | XLR 3-Pin |
| MIC 18 | In | XLR 3-Pin |
| MIC 19 | In | XLR 3-Pin |
| MIC 20 | In | XLR 3-Pin |
| MIC 21 | In | XLR 3-Pin |
| MIC 22 | In | XLR 3-Pin |
| MIC 23 | In | XLR 3-Pin |
| MIC 24 | In | XLR 3-Pin |
| Line 1 | In | XLR 3-Pin |
| Line 2 | In | XLR 3-Pin |
| Line 3 | In | XLR 3-Pin |
| Line 4 | In | XLR 3-Pin |
Other (16)
| Port | Direction | Connector |
|---|---|---|
| BUS 1 | Out | – |
| BUS 2 | Out | – |
| BUS 3 | Out | – |
| BUS 4 | Out | – |
| BUS 5 | Out | – |
| BUS 6 | Out | – |
| BUS 7 | Out | – |
| BUS 8 | Out | – |
| BUS 9 | Out | – |
| BUS 10 | Out | – |
| BUS 11 | Out | – |
| BUS 12 | Out | – |
| BUS 13 | Out | – |
| BUS 14 | Out | – |
| MIX L | Out | – |
| MIX R | Out | – |
Specs
- Category
- Audio
What it connects to
- Analog Audio in: 1,159 devices in the library can feed it.
Use the Soundcraft Si Expression 3 in a diagram
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Related devices
Port data from the Patchify gear library, last updated 25 January 2026. Report a correction