Dave Smith Instruments Mopho x4: MIDI CC, NRPN and OSC map¶
The Dave Smith Instruments Mopho x4 as named OSC addresses — 43 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Dave Smith Instruments Mopho x4 |
|---|---|
| Vendor | Dave Smith Instruments |
| OSC prefix | /mopho_x4 |
| Source | 📦 Derived from MIDI Guide (community CC/NRPN data) |
| Firmware | unknown |
| Revision | per pencilresearch canonical CSV |
| Upstream | pencilresearch |
| Data licence | CC-BY-SA-4.0 — MIDI Guide (https://midi.guide) by Pencil Research and contributors |
| Driver file | devices/dave-smith-instruments/mopho_x4.json |
Not tested on the device yet
This driver comes from documentation or community data and has not been checked on real hardware. If you own one, a quick test and a pull request promoting it helps everyone — see CONTRIBUTING.
How do you control it?¶
Find the MIDI ports, then start the bridge with this driver:
osc-bridge detect # prints the ready-to-run line for what is plugged in
osc-bridge run --device devices/dave-smith-instruments/mopho_x4.json --out-port <N> --in-port <M>
Then send OSC to 127.0.0.1:7777, for example:
From Claude or any MCP client, the osc-bridge mcp server exposes this driver as mopho_x4: ask “what can the Dave Smith Instruments Mopho x4 do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (43)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/mopho_x4/oscillators/oscillator_1_frequency |
20 | 0–127 | continuous | Oscillators | |
/mopho_x4/oscillators/oscillator_1_frequency_fine |
21 | 0–127 | continuous | Oscillators | |
/mopho_x4/oscillators/oscillator_1_shape |
22 | 0–127 | continuous | Oscillators | |
/mopho_x4/oscillators/glide_1 |
23 | 0–127 | continuous | Oscillators | |
/mopho_x4/oscillators/oscillator_2_frequency |
24 | 0–127 | continuous | Oscillators | |
/mopho_x4/oscillators/oscillator_2_frequency_fine |
25 | 0–127 | continuous | Oscillators | |
/mopho_x4/oscillators/oscillator_2_shape |
26 | 0–127 | continuous | Oscillators | |
/mopho_x4/oscillators/glide_2 |
27 | 0–127 | continuous | Oscillators | |
/mopho_x4/oscillators/sub_oscillator_1 |
30 | 0–127 | continuous | Oscillators | |
/mopho_x4/oscillators/sub_oscillator_2 |
31 | 0–127 | continuous | Oscillators | |
/mopho_x4/oscillators/oscillator_mix |
28 | 0–127 | continuous | Oscillators | |
/mopho_x4/oscillators/noise_level |
29 | 0–127 | continuous | Oscillators | |
/mopho_x4/oscillators/feedback_amount |
52 | 0–127 | continuous | Oscillators | |
/mopho_x4/oscillators/feedback_gain |
53 | 0–127 | continuous | Oscillators | |
/mopho_x4/filter/frequency |
102 | 0–127 | continuous | Filter | |
/mopho_x4/filter/resonance |
103 | 0–127 | continuous | Filter | |
/mopho_x4/filter/key_amount |
104 | 0–127 | continuous | Filter | |
/mopho_x4/filter/audio_mod |
105 | 0–127 | continuous | Filter | |
/mopho_x4/filter/envelope_amount |
106 | 0–127 | continuous | Filter | |
/mopho_x4/filter/envelope_velocity_amount |
107 | 0–127 | continuous | Filter | |
/mopho_x4/filter/delay |
108 | 0–127 | continuous | Filter | |
/mopho_x4/filter/attack |
109 | 0–127 | continuous | Filter | |
/mopho_x4/filter/decay |
110 | 0–127 | continuous | Filter | |
/mopho_x4/filter/sustain |
111 | 0–127 | continuous | Filter | |
/mopho_x4/filter/release |
112 | 0–127 | continuous | Filter | |
/mopho_x4/amp/pan_spread |
114 | 0–127 | continuous | Amp | |
/mopho_x4/amp/envelope_amount |
115 | 0–127 | continuous | Amp | |
/mopho_x4/amp/velocity_amount |
116 | 0–127 | continuous | Amp | |
/mopho_x4/amp/delay |
117 | 0–127 | continuous | Amp | |
/mopho_x4/amp/attack |
118 | 0–127 | continuous | Amp | |
/mopho_x4/amp/decay |
119 | 0–127 | continuous | Amp | |
/mopho_x4/amp/sustain |
75 | 0–127 | continuous | Amp | |
/mopho_x4/amp/release |
76 | 0–127 | continuous | Amp | |
/mopho_x4/envelope_3/destination |
85 | 0–127 | continuous | Envelope 3 | |
/mopho_x4/envelope_3/amount |
86 | 0–127 | continuous | Envelope 3 | |
/mopho_x4/envelope_3/velocity_amount |
87 | 0–127 | continuous | Envelope 3 | |
/mopho_x4/envelope_3/delay |
88 | 0–127 | continuous | Envelope 3 | |
/mopho_x4/envelope_3/attack |
89 | 0–127 | continuous | Envelope 3 | |
/mopho_x4/envelope_3/decay |
90 | 0–127 | continuous | Envelope 3 | |
/mopho_x4/envelope_3/sustain |
77 | 0–127 | continuous | Envelope 3 | |
/mopho_x4/envelope_3/release |
78 | 0–127 | continuous | Envelope 3 | |
/mopho_x4/clock/bpm |
14 | 0–127 | continuous | Clock | |
/mopho_x4/clock/divide |
15 | 0–127 | continuous | Clock |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /mopho_x4/note/on <note> <velocity>, /mopho_x4/cc/<number> <value>, /mopho_x4/pitchbend <0-16383>, /mopho_x4/program_change <n>.
Limitations¶
CC/NRPN only. SysEx (preset management, display control, bulk dump/load, vendor-proprietary opcodes) is NOT covered by pencilresearch. To extend this device with SysEx, sniff the vendor editor, add `sysex.header/footer` + `commands` blocks, and use `update_device.md` PR template.