Chase Bliss Brothers AM: MIDI CC, NRPN and OSC map¶
The Chase Bliss Brothers AM as named OSC addresses — 30 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Chase Bliss Brothers AM |
|---|---|
| Vendor | Chase Bliss |
| OSC prefix | /brothers_am |
| 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/chase-bliss/brothers_am.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/chase-bliss/brothers_am.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 brothers_am: ask “what can the Chase Bliss Brothers AM do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (30)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/brothers_am/knobs/gain_2 |
14 | 0–127 | continuous | Knobs | |
/brothers_am/knobs/volume_2 |
15 | 0–127 | continuous | Knobs | |
/brothers_am/knobs/gain_1 |
16 | 0–127 | continuous | Knobs | |
/brothers_am/knobs/tone_2 |
17 | 0–127 | continuous | Knobs | |
/brothers_am/knobs/volume_1 |
18 | 0–127 | continuous | Knobs | |
/brothers_am/knobs/tone_1 |
19 | 0–127 | continuous | Knobs | |
/brothers_am/knobs/presence_2 |
27 | 0–127 | continuous | Knobs | |
/brothers_am/knobs/presence_1 |
29 | 0–127 | continuous | Knobs | |
/brothers_am/toggles/gain_2_type |
21 | 0–127 | continuous | Toggles | |
/brothers_am/toggles/treble_boost |
22 | 0–127 | continuous | Toggles | |
/brothers_am/toggles/gain_1_type |
23 | 0–127 | continuous | Toggles | |
/brothers_am/foot_switches/channel_1_bypass |
102 | 0–127 | continuous | Foot switches | |
/brothers_am/foot_switches/channel_2_bypass |
103 | 0–127 | continuous | Foot switches | |
/brothers_am/other/expression |
100 | 0–127 | continuous | Other | |
/brothers_am/other/preset_save |
111 | 1–122 | continuous | Other | |
/brothers_am/dip_switches_left_bank/volume_1 |
61 | 0–127 | continuous | Dip switches, left bank | |
/brothers_am/dip_switches_left_bank/volume_2 |
62 | 0–127 | continuous | Dip switches, left bank | |
/brothers_am/dip_switches_left_bank/gain_1 |
63 | 0–127 | continuous | Dip switches, left bank | |
/brothers_am/dip_switches_left_bank/gain_2 |
64 | 0–127 | continuous | Dip switches, left bank | |
/brothers_am/dip_switches_left_bank/tone_1 |
65 | 0–127 | continuous | Dip switches, left bank | |
/brothers_am/dip_switches_left_bank/tone_2 |
66 | 0–127 | continuous | Dip switches, left bank | |
/brothers_am/dip_switches_left_bank/sweep |
67 | 0–127 | continuous | Dip switches, left bank | |
/brothers_am/dip_switches_left_bank/polarity |
68 | 0–127 | continuous | Dip switches, left bank | |
/brothers_am/dip_switches_right_bank/hi_gain_1 |
71 | 0–127 | continuous | Dip switches, right bank | |
/brothers_am/dip_switches_right_bank/hi_gain_2 |
72 | 0–127 | continuous | Dip switches, right bank | |
/brothers_am/dip_switches_right_bank/motobyp_1 |
73 | 0–127 | continuous | Dip switches, right bank | |
/brothers_am/dip_switches_right_bank/motobyp_2 |
74 | 0–127 | continuous | Dip switches, right bank | |
/brothers_am/dip_switches_right_bank/pres_link_1 |
75 | 0–127 | continuous | Dip switches, right bank | |
/brothers_am/dip_switches_right_bank/pres_link_2 |
76 | 0–127 | continuous | Dip switches, right bank | |
/brothers_am/dip_switches_right_bank/master |
77 | 0–127 | continuous | Dip switches, right bank |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /brothers_am/note/on <note> <velocity>, /brothers_am/cc/<number> <value>, /brothers_am/pitchbend <0-16383>, /brothers_am/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.