Ensoniq ASR-X Pro: MIDI CC, NRPN and OSC map¶
The Ensoniq ASR-X Pro as named OSC addresses — 16 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Ensoniq ASR-X Pro |
|---|---|
| Vendor | Ensoniq |
| OSC prefix | /asr_x_pro |
| 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/ensoniq/asr_x_pro.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/ensoniq/asr_x_pro.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 asr_x_pro: ask “what can the Ensoniq ASR-X Pro do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (16)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/asr_x_pro/mod_wheel |
1 | 0–127 | continuous | ||
/asr_x_pro/foot_pedal |
4 | 0–127 | continuous | ||
/asr_x_pro/glide_on_off |
65 | 0–127 | continuous | ||
/asr_x_pro/glide_time |
5 | 0–127 | continuous | ||
/asr_x_pro/volume |
7 | 0–127 | continuous | ||
/asr_x_pro/pan |
10 | 0–127 | continuous | ||
/asr_x_pro/expression |
11 | 0–127 | continuous | ||
/asr_x_pro/amp_env_atk |
73 | 0–127 | continuous | ||
/asr_x_pro/amp_env_dcy |
76 | 0–127 | continuous | ||
/asr_x_pro/amp_env_sus |
64 | 0–127 | continuous | ||
/asr_x_pro/amp_env_rel |
72 | 0–127 | continuous | ||
/asr_x_pro/filter_cutoff |
74 | 0–127 | continuous | ||
/asr_x_pro/filter_resonance |
77 | 0–127 | continuous | ||
/asr_x_pro/lfo_rate |
75 | 0–127 | continuous | ||
/asr_x_pro/mute_track |
119 | 0–127 | continuous | ||
/asr_x_pro/patch_select |
70 | 0–127 | continuous |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /asr_x_pro/note/on <note> <velocity>, /asr_x_pro/cc/<number> <value>, /asr_x_pro/pitchbend <0-16383>, /asr_x_pro/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.