Behringer JT-4000M MICRO MIDI CC chart, NRPN and OSC map¶
The Behringer JT-4000M MICRO MIDI implementation: 31 CC, each named, for Claude (MCP), SuperCollider or any OSC app.
| Device | Behringer JT-4000M MICRO |
|---|---|
| Vendor | Behringer |
| OSC prefix | /jt_4000m_micro |
| 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/behringer/jt_4000m_micro.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/behringer/jt_4000m_micro.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 jt_4000m_micro: ask “what can the Behringer JT-4000M MICRO do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (31)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/jt_4000m_micro/oscillators/osc1_wave |
24 | 0–127 | continuous | Oscillators | |
/jt_4000m_micro/oscillators/osc1_pwm_ss_fb |
113 | 0–127 | continuous | Oscillators | |
/jt_4000m_micro/oscillators/osc1_coarse_t |
115 | 0–127 | continuous | Oscillators | |
/jt_4000m_micro/oscillators/osc1_ftune |
111 | 0–127 | continuous | Oscillators | |
/jt_4000m_micro/oscillators/osc2_wave |
25 | 0–127 | continuous | Oscillators | |
/jt_4000m_micro/oscillators/osc2_pwm |
114 | 0–127 | continuous | Oscillators | |
/jt_4000m_micro/oscillators/osc2_coarse_t |
116 | 0–127 | continuous | Oscillators | |
/jt_4000m_micro/oscillators/osc2_ftune |
112 | 0–127 | continuous | Oscillators | |
/jt_4000m_micro/oscillators/osc_balance |
29 | 0–127 | continuous | Oscillators | |
/jt_4000m_micro/vca_envelope/vca_eg_att |
81 | 0–127 | continuous | VCA envelope | |
/jt_4000m_micro/vca_envelope/vca_eg_dec |
82 | 0–127 | continuous | VCA envelope | |
/jt_4000m_micro/vca_envelope/vca_eg_sus |
83 | 0–127 | continuous | VCA envelope | |
/jt_4000m_micro/vca_envelope/vca_eg_rel |
84 | 0–127 | continuous | VCA envelope | |
/jt_4000m_micro/filter/vcf_res |
71 | 0–127 | continuous | Filter | |
/jt_4000m_micro/filter/vcf_cut |
74 | 0–127 | continuous | Filter | |
/jt_4000m_micro/filter/fenv_amount |
47 | 0–127 | continuous | Filter | |
/jt_4000m_micro/filter/vcf_eg_att |
85 | 0–127 | continuous | Filter | |
/jt_4000m_micro/filter/vcf_eg_dec |
86 | 0–127 | continuous | Filter | |
/jt_4000m_micro/filter/vcf_eg_sus |
87 | 0–127 | continuous | Filter | |
/jt_4000m_micro/filter/vcf_eg_rel |
88 | 0–127 | continuous | Filter | |
/jt_4000m_micro/lfos/lfo1_dest |
56 | 0–127 | continuous | LFOs | |
/jt_4000m_micro/lfos/lfo1_wave |
54 | 0–127 | continuous | LFOs | |
/jt_4000m_micro/lfos/lfo1_amount |
70 | 0–127 | continuous | LFOs | |
/jt_4000m_micro/lfos/lfo1_rate |
72 | 0–127 | continuous | LFOs | |
/jt_4000m_micro/lfos/lfo2_wave |
55 | 0–127 | continuous | LFOs | |
/jt_4000m_micro/lfos/lfo2_rate |
73 | 0–127 | continuous | LFOs | |
/jt_4000m_micro/lfos/lfo2_amount |
28 | 0–127 | continuous | LFOs | |
/jt_4000m_micro/modulation/mod |
1 | 0–127 | continuous | Modulation | |
/jt_4000m_micro/modulation/ring_mod_amount |
95 | 0–127 | continuous | Modulation | |
/jt_4000m_micro/modulation/ring_mod_toggle |
96 | 0–127 | continuous | Modulation | |
/jt_4000m_micro/general/porta_time |
5 | 0–127 | continuous | General |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /jt_4000m_micro/note/on <note> <velocity>, /jt_4000m_micro/cc/<number> <value>, /jt_4000m_micro/pitchbend <0-16383>, /jt_4000m_micro/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 Behringer JT-4000M MICRO?
CC 71 (0–127), named /jt_4000m_micro/filter/vcf_res in SynthHub's map.
How many parameters of the Behringer JT-4000M MICRO can be controlled over MIDI?
SynthHub's map of the Behringer JT-4000M MICRO lists 31 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 Behringer JT-4000M MICRO?
Yes: SynthHub's hosted MCP server knows the Behringer JT-4000M MICRO's MIDI map, and its browser relay lets the agent send it parameter changes or load a sound, each sound change confirmed by you.