Bastl Instruments Kastle 2 FX Wizard MIDI CC chart, NRPN and OSC map¶
The Bastl Instruments Kastle 2 FX Wizard MIDI implementation: 17 CC, each named, for Claude (MCP), SuperCollider or any OSC app.
| Device | Bastl Instruments Kastle 2 FX Wizard |
|---|---|
| Vendor | Bastl Instruments |
| OSC prefix | /kastle_2_fx_wizard |
| 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/bastl-instruments/kastle_2_fx_wizard.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/bastl-instruments/kastle_2_fx_wizard.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 kastle_2_fx_wizard: ask “what can the Bastl Instruments Kastle 2 FX Wizard do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (17)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/kastle_2_fx_wizard/effects/fx_mode |
1 | 0–127 | continuous | Effects | |
/kastle_2_fx_wizard/effects/fx_mode_modulation |
26 | 0–127 | continuous | Effects | |
/kastle_2_fx_wizard/effects/time |
14 | 0–127 | continuous | Effects | |
/kastle_2_fx_wizard/effects/time_modulation |
15 | 0–127 | continuous | Effects | |
/kastle_2_fx_wizard/effects/feedback |
16 | 0–127 | continuous | Effects | |
/kastle_2_fx_wizard/effects/feedback_modulation |
17 | 0–127 | continuous | Effects | |
/kastle_2_fx_wizard/effects/amount |
18 | 0–127 | continuous | Effects | |
/kastle_2_fx_wizard/effects/amount_modulation |
19 | 0–127 | continuous | Effects | |
/kastle_2_fx_wizard/effects/filter |
20 | 0–127 | continuous | Effects | |
/kastle_2_fx_wizard/effects/stereo |
21 | 0–127 | continuous | Effects | |
/kastle_2_fx_wizard/lfo/lfo |
22 | 0–127 | continuous | LFO | |
/kastle_2_fx_wizard/lfo/modulation |
23 | 0–127 | continuous | LFO | |
/kastle_2_fx_wizard/sequencer/tempo |
24 | 0–127 | continuous | Sequencer | |
/kastle_2_fx_wizard/sequencer/rhythm |
25 | 0–127 | continuous | Sequencer | |
/kastle_2_fx_wizard/global/output_volume |
7 | 0–127 | continuous | Global | |
/kastle_2_fx_wizard/global/input_gain |
9 | 0–127 | continuous | Global | |
/kastle_2_fx_wizard/global/reset_all_controllers |
121 | 0–127 | continuous | Global |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /kastle_2_fx_wizard/note/on <note> <velocity>, /kastle_2_fx_wizard/cc/<number> <value>, /kastle_2_fx_wizard/pitchbend <0-16383>, /kastle_2_fx_wizard/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.
Frequently asked questions¶
Which MIDI CC controls the filter cutoff on the Bastl Instruments Kastle 2 FX Wizard?
CC 20 (0–127), named /kastle_2_fx_wizard/effects/filter in SynthHub's map.
How many parameters of the Bastl Instruments Kastle 2 FX Wizard can be controlled over MIDI?
SynthHub's map of the Bastl Instruments Kastle 2 FX Wizard lists 17 MIDI CC parameters, each with its number, range and a readable name; the full chart is on this page.
Can an AI agent like Claude control the Bastl Instruments Kastle 2 FX Wizard?
Yes: SynthHub's hosted MCP server knows the Bastl Instruments Kastle 2 FX Wizard's MIDI map, and its browser relay lets the agent send it parameter changes or load a sound, each sound change confirmed by you.