Written from devices/roland/mks_30.electra-community-v2.fw-kiwi.jsonEdit on GitHub JSON

Roland MKS-30 (per Electra preset) MIDI CC chart, NRPN and OSC map

The Roland MKS-30 MIDI implementation: 91 CC, 3 SysEx commands, each named, for Claude (MCP), SuperCollider or any OSC app.

sourceElectra One preset
firmwarekiwi
real unitnot yet checked

Not checked on a real Roland MKS-30 yet. Own one? Load a sound or send a control, and tell us whether it worked.

Maker: Roland
Version: per Electra preset
Source: Electra One preset
OSC prefix: /mks_30

Use 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/roland/mks_30.electra-community-v2.fw-kiwi.json --out-port <N> --in-port <M>

Then send OSC to 127.0.0.1:7777, for example:

osc-bridge osc-send /mks_30/range 63

From Claude or any MCP client, the osc-bridge mcp server exposes this driver as mks_30: ask “what can the Roland MKS-30 do?” and it reads this map with list_routes. See the MCP guide.

MIDI controls

94 controls, each with its number, its range and the name to send

Control	CC	Range	Name to send
Range	65	0–127	`/mks_30/range`
Wave	66	0–127	`/mks_30/wave`
Coarse tune	8	-12–12	`/mks_30/coarse_tune`
Cross mod	84	0–127	`/mks_30/cross_mod`
Dco mix	22	-63–64	`/mks_30/dco_mix`
Env src	68	0–127	`/mks_30/env_src`
Level	10	-63–64	`/mks_30/level`
Source	67	0–127	`/mks_30/source`
Level	12	0–127	`/mks_30/level`
Env 1	35	0–127	`/mks_30/env_1`
Env 1	36	0–127	`/mks_30/env_1`
Env 1	37	0–127	`/mks_30/env_1`
Env 1	39	0–127	`/mks_30/env_1`
Range	70	0–127	`/mks_30/range`
Coarse tune	14	-12–12	`/mks_30/coarse_tune`
Fine tune	15	-50–50	`/mks_30/fine_tune`
Env 2	40	0–127	`/mks_30/env_2`
Env 2	41	0–127	`/mks_30/env_2`
Env 2	42	0–127	`/mks_30/env_2`
Env 2	43	0–127	`/mks_30/env_2`
Vca mode	77	0–127	`/mks_30/vca_mode`
Env src	73	0–127	`/mks_30/env_src`
Level	17	-63–64	`/mks_30/level`
Source	72	0–127	`/mks_30/source`
Level	16	0–127	`/mks_30/level`
Env 3	59	0–127	`/mks_30/env_3`
Env 3	60	0–127	`/mks_30/env_3`
Env 3	61	0–127	`/mks_30/env_3`
Env 3	62	0–127	`/mks_30/env_3`
Cutoff	27	0–127	`/mks_30/cutoff`
Resonance	28	0–127	`/mks_30/resonance`
Key track lvl	31	0–127	`/mks_30/key_track_lvl`
Cutoff	33	0–127	`/mks_30/cutoff`
Level	30	-63–64	`/mks_30/level`
Env src	76	0–127	`/mks_30/env_src`
Level	29	0–127	`/mks_30/level`
Source	75	0–127	`/mks_30/source`
Volume	7	0–127	`/mks_30/volume`
Wave	79	0–127	`/mks_30/wave`
Rate	44	0–127	`/mks_30/rate`
Delay	45	0–127	`/mks_30/delay`
Wave	81	0–127	`/mks_30/wave`
Rate	48	0–127	`/mks_30/rate`
Delay	49	0–127	`/mks_30/delay`
Wave	80	0–127	`/mks_30/wave`
Rate	46	0–127	`/mks_30/rate`
Delay	47	0–127	`/mks_30/delay`
All notes off	123	0–127	`/mks_30/all_notes_off`
Depth	103	-63–63	`/mks_30/depth`
Depth	107	0–127	`/mks_30/depth`
Depth	82	-63–63	`/mks_30/depth`
Wave	71	0–127	`/mks_30/wave`
Chorus	106	0–127	`/mks_30/chorus`
Level	108	-63–64	`/mks_30/level`
Level	109	-63–64	`/mks_30/level`
Level	111	-63–64	`/mks_30/level`
Level	113	-63–64	`/mks_30/level`
Level	115	-63–64	`/mks_30/level`
Level	117	-63–64	`/mks_30/level`
Level	116	-63–64	`/mks_30/level`
Level	114	-63–64	`/mks_30/level`
Level	112	-63–64	`/mks_30/level`
Level	110	-63–64	`/mks_30/level`
Time	5	0–127	`/mks_30/time`
Dco detune	21	0–127	`/mks_30/dco_detune`
Analogue feel	63	0–127	`/mks_30/analogue_feel`
Mode	85	0–127	`/mks_30/mode`
Mix env	23	-63–64	`/mks_30/mix_env`
Mix dyn	24	0–127	`/mks_30/mix_dyn`
Pw	11	0–127	`/mks_30/pw`
Pwm	12	0–127	`/mks_30/pwm`
Pwm source	92	0–127	`/mks_30/pwm_source`
Dco2 pw	18	0–127	`/mks_30/dco2_pw`
Dco2 pwm	19	0–127	`/mks_30/dco2_pwm`
Pwm source	93	0–127	`/mks_30/pwm_source`
Mix env	105	0–127	`/mks_30/mix_env`
Steal	95	0–127	`/mks_30/steal`
Voice mode	102	0–127	`/mks_30/voice_mode`
List	125	0–127	`/mks_30/list`
Clock source	90	0–127	`/mks_30/clock_source`
Arp mode	86	0–127	`/mks_30/arp_mode`
Arp range	87	0–127	`/mks_30/arp_range`
Clock divide	88	0–127	`/mks_30/clock_divide`
Arp seq start	122	0–127	`/mks_30/arp_seq_start`
Arp seq stop	124	0–127	`/mks_30/arp_seq_stop`
Arp seq cont	123	0–127	`/mks_30/arp_seq_cont`
Bend range	91	0–127	`/mks_30/bend_range`
Patch tempo	51	0–127	`/mks_30/patch_tempo`
Clock divide	89	0–127	`/mks_30/clock_divide`
Vca dyn	26	0–127	`/mks_30/vca_dyn`
Vcf dyn	34	0–127	`/mks_30/vcf_dyn`

SysEx commands

Command	Arguments	Name to send
Source	val: u7	`/mks_30/source`
Destination	val: u7	`/mks_30/destination`
Sync	val: u7	`/mks_30/sync`

Performance MIDI

Notes, pitch bend and any CC are also available: /mks_30/note/on <note> <velocity>, /mks_30/cc/<number> <value>, /mks_30/pitchbend <0-16383>, /mks_30/program_change <n>.

JSON

Limitations

Imported from an Electra One community preset. The mapping reflects the preset author's editorial choices: parameter naming, ranges, and which params are exposed. Untested on hardware in this repo.

Other versions

The Roland MKS-30 is mapped in 4 versions. per Electra preset, per Electra preset, per Electra preset.

Frequently asked questions

Which MIDI CC controls the filter cutoff on the Roland MKS-30?

CC 27 (0–127), named /mks_30/cutoff in SynthHub's map.

How many parameters of the Roland MKS-30 can be controlled over MIDI?

SynthHub's map of the Roland MKS-30 lists 91 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 Roland MKS-30?

Yes: SynthHub's hosted MCP server knows the Roland MKS-30's MIDI map, and its browser relay lets the agent send it parameter changes or load a sound, each sound change confirmed by you.