BOSS KATANA-Head MkII: MIDI CC, NRPN and OSC map¶
The BOSS KATANA-Head MkII as named OSC addresses — 11 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | BOSS KATANA-Head MkII |
|---|---|
| Vendor | BOSS |
| OSC prefix | /katana_head_mkii |
| 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/boss/katana_head_mkii.pencilresearch.fw-unknown.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/boss/katana_head_mkii.pencilresearch.fw-unknown.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 katana_head_mkii: ask “what can the BOSS KATANA-Head MkII do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (11)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/katana_head_mkii/effects/booster_switch |
16 | 0–127 | continuous | Effects | |
/katana_head_mkii/effects/mod_switch |
17 | 0–127 | continuous | Effects | |
/katana_head_mkii/effects/fx_switch |
18 | 0–127 | continuous | Effects | |
/katana_head_mkii/effects/delay_switch |
19 | 0–127 | continuous | Effects | |
/katana_head_mkii/effects/reverb_switch |
20 | 0–127 | continuous | Effects | |
/katana_head_mkii/effects/effect_loop_switch |
21 | 0–127 | continuous | Effects | |
/katana_head_mkii/ga_fc/expression_pedal_1_fx |
80 | 0–127 | continuous | GA-FC | |
/katana_head_mkii/ga_fc/expression_pedal_2_volume |
81 | 0–127 | continuous | GA-FC | |
/katana_head_mkii/ga_fc/fs1 |
83 | 0–127 | continuous | GA-FC | |
/katana_head_mkii/ga_fc/fs2 |
84 | 0–127 | continuous | GA-FC | |
/katana_head_mkii/foot_control/expression_pedal |
82 | 0–127 | continuous | Foot control |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /katana_head_mkii/note/on <note> <velocity>, /katana_head_mkii/cc/<number> <value>, /katana_head_mkii/pitchbend <0-16383>, /katana_head_mkii/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.