Written from devices/roland/mks_70.electra-community.fw-vecoven-4.jsonEdit on GitHubJSON

Roland MKS-70 MIDI CC chart, NRPN and OSC map

The Roland MKS-70 MIDI implementation: 164 NRPN, 26 SysEx commands, each named, for Claude (MCP), SuperCollider or any OSC app.

  • sourceElectra One preset
  • firmwarevecoven-4
  • real unitnot yet checked

Not checked on a real Roland MKS-70 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_70

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_70.electra-community.fw-vecoven-4.json --out-port <N> --in-port <M>

Then send OSC to 127.0.0.1:7777, for example:

osc-bridge osc-send /mks_70/range 63

From Claude or any MCP client, the osc-bridge mcp server exposes this driver as mks_70: ask “what can the Roland MKS-70 do?” and it reads this map with list_routes. See the MCP guide.

MIDI controls

190 controls, each with its number, its range and the name to send
Control CC NRPN (MSB/LSB) Range Name to send
Range 0 / 0 0–127 /mks_70/range
Waveform 0 / 1 0–127 /mks_70/waveform
Tune 0 / 2 0–127 /mks_70/tune
Lfo depth 0 / 3 0–127 /mks_70/lfo_depth
Lfo src 0 / 4 0–127 /mks_70/lfo_src
Env depth 0 / 5 0–127 /mks_70/env_depth
Dyn depth 0 / 6 0–127 /mks_70/dyn_depth
Dco1 env src 0 / 7 0–127 /mks_70/dco1_env_src
Vca level 0 / 45 0–127 /mks_70/vca_level
Vca env src 0 / 46 0–127 /mks_70/vca_env_src
Dyn depth 0 / 47 0–127 /mks_70/dyn_depth
Hpf freq 0 / 18 0–127 /mks_70/hpf_freq
Range 0 / 8 0–127 /mks_70/range
Waveform 0 / 9 0–127 /mks_70/waveform
Tune 0 / 10 0–127 /mks_70/tune
Lfo depth 0 / 11 0–127 /mks_70/lfo_depth
Lfo src 0 / 12 0–127 /mks_70/lfo_src
Env depth 0 / 13 0–127 /mks_70/env_depth
Dyn depth 0 / 14 0–127 /mks_70/dyn_depth
Dco2 env src 0 / 15 0–127 /mks_70/dco2_env_src
Fine tune 0 / 17 0–127 /mks_70/fine_tune
X mod 0 / 16 0–127 /mks_70/x_mod
Cutoff 0 / 37 0–127 /mks_70/cutoff
Resonance 0 / 38 0–127 /mks_70/resonance
Lfo1 depth 0 / 39 0–127 /mks_70/lfo1_depth
Lfo2 depth 0 / 40 0–127 /mks_70/lfo2_depth
Env depth 0 / 41 0–127 /mks_70/env_depth
Key follow 0 / 42 0–127 /mks_70/key_follow
Dyn depth 0 / 43 0–127 /mks_70/dyn_depth
Dco2 env src 0 / 44 0–127 /mks_70/dco2_env_src
Mix dco1 0 / 32 0–127 /mks_70/mix_dco1
Mix dco2 0 / 33 0–127 /mks_70/mix_dco2
Env depth 0 / 34 0–127 /mks_70/env_depth
Mix dyn 0 / 35 0–127 /mks_70/mix_dyn
Mix env src 0 / 36 0–127 /mks_70/mix_env_src
Chorus 0 / 19 0–127 /mks_70/chorus
Pwm width 0 / 20 0–127 /mks_70/pwm_width
Pwm env 0 / 21 0–127 /mks_70/pwm_env
Lfo depth 0 / 22 0–127 /mks_70/lfo_depth
Pwm lfo src 0 / 23 0–127 /mks_70/pwm_lfo_src
Pwm dyn 0 / 24 0–127 /mks_70/pwm_dyn
Pwm env src 0 / 25 0–127 /mks_70/pwm_env_src
Pwm width 0 / 26 0–127 /mks_70/pwm_width
Pwm env 0 / 27 0–127 /mks_70/pwm_env
Lfo depth 0 / 28 0–127 /mks_70/lfo_depth
Pwm lfo src 0 / 29 0–127 /mks_70/pwm_lfo_src
Pwm dyn 0 / 30 0–127 /mks_70/pwm_dyn
Pwm env src 0 / 31 0–127 /mks_70/pwm_env_src
Waveform 0 / 48 0–127 /mks_70/waveform
Lfo delay 0 / 49 0–127 /mks_70/lfo_delay
Lfo rate 0 / 50 0–127 /mks_70/lfo_rate
Lfo2 depth 0 / 51 0–127 /mks_70/lfo2_depth
Sync 0 / 52 0–127 /mks_70/sync
Waveform 0 / 53 0–127 /mks_70/waveform
Lfo delay 0 / 54 0–127 /mks_70/lfo_delay
Lfo rate 0 / 55 0–127 /mks_70/lfo_rate
Lfo1 depth 0 / 56 0–127 /mks_70/lfo1_depth
Sync 0 / 57 0–127 /mks_70/sync
T1 0 / 58 0–127 /mks_70/t1
L1 0 / 59 0–127 /mks_70/l1
T2 0 / 60 0–127 /mks_70/t2
L2 0 / 61 0–127 /mks_70/l2
T3 0 / 62 0–127 /mks_70/t3
L3 0 / 63 0–127 /mks_70/l3
T4 0 / 64 0–127 /mks_70/t4
Key follow 0 / 65 0–127 /mks_70/key_follow
T1 0 / 66 0–127 /mks_70/t1
L1 0 / 67 0–127 /mks_70/l1
T2 0 / 68 0–127 /mks_70/t2
L2 0 / 69 0–127 /mks_70/l2
T3 0 / 70 0–127 /mks_70/t3
L3 0 / 71 0–127 /mks_70/l3
T4 0 / 72 0–127 /mks_70/t4
Key follow 0 / 73 0–127 /mks_70/key_follow
Attack 0 / 74 0–99 /mks_70/attack
Attack 0 / 75 0–99 /mks_70/attack
Attack 0 / 76 0–99 /mks_70/attack
Attack 0 / 77 0–99 /mks_70/attack
Key follow 0 / 78 0–127 /mks_70/key_follow
Attack 0 / 79 0–99 /mks_70/attack
Attack 0 / 80 0–511 /mks_70/attack
Attack 0 / 81 0–511 /mks_70/attack
Attack 0 / 82 0–511 /mks_70/attack
Key follow 0 / 83 0–127 /mks_70/key_follow
Range 2 / 0 0–127 /mks_70/range
Waveform 2 / 1 0–127 /mks_70/waveform
Tune 2 / 2 0–127 /mks_70/tune
Lfo depth 2 / 3 0–127 /mks_70/lfo_depth
Lfo src 2 / 4 0–127 /mks_70/lfo_src
Env depth 2 / 5 0–127 /mks_70/env_depth
Dyn depth 2 / 6 0–127 /mks_70/dyn_depth
Dco1 env src 2 / 7 0–127 /mks_70/dco1_env_src
Vca level 2 / 45 0–127 /mks_70/vca_level
Vca env src 2 / 46 0–127 /mks_70/vca_env_src
Dyn depth 2 / 47 0–127 /mks_70/dyn_depth
Hpf freq 2 / 18 0–127 /mks_70/hpf_freq
Range 2 / 8 0–127 /mks_70/range
Waveform 2 / 9 0–127 /mks_70/waveform
Tune 2 / 10 0–127 /mks_70/tune
Lfo depth 2 / 11 0–127 /mks_70/lfo_depth
Lfo src 2 / 12 0–127 /mks_70/lfo_src
Env depth 2 / 13 0–127 /mks_70/env_depth
Dyn depth 2 / 14 0–127 /mks_70/dyn_depth
Dco2 env src 2 / 15 0–127 /mks_70/dco2_env_src
Fine tune 2 / 17 0–127 /mks_70/fine_tune
X mod 2 / 16 0–127 /mks_70/x_mod
Cutoff 2 / 37 0–127 /mks_70/cutoff
Resonance 2 / 38 0–127 /mks_70/resonance
Lfo1 depth 2 / 39 0–127 /mks_70/lfo1_depth
Lfo2 depth 2 / 40 0–127 /mks_70/lfo2_depth
Env depth 2 / 41 0–127 /mks_70/env_depth
Key follow 2 / 42 0–127 /mks_70/key_follow
Dyn depth 2 / 43 0–127 /mks_70/dyn_depth
Dco2 env src 2 / 44 0–127 /mks_70/dco2_env_src
Mix dco1 2 / 32 0–127 /mks_70/mix_dco1
Mix dco2 2 / 33 0–127 /mks_70/mix_dco2
Env depth 2 / 34 0–127 /mks_70/env_depth
Mix dyn 2 / 35 0–127 /mks_70/mix_dyn
Mix env src 2 / 36 0–127 /mks_70/mix_env_src
Chorus 2 / 19 0–127 /mks_70/chorus
Pwm width 2 / 20 0–127 /mks_70/pwm_width
Pwm env 2 / 21 0–127 /mks_70/pwm_env
Lfo depth 2 / 22 0–127 /mks_70/lfo_depth
Pwm lfo src 2 / 23 0–127 /mks_70/pwm_lfo_src
Pwm dyn 2 / 24 0–127 /mks_70/pwm_dyn
Pwm env src 2 / 25 0–127 /mks_70/pwm_env_src
Pwm width 2 / 26 0–127 /mks_70/pwm_width
Pwm env 2 / 27 0–127 /mks_70/pwm_env
Lfo depth 2 / 28 0–127 /mks_70/lfo_depth
Pwm lfo src 2 / 29 0–127 /mks_70/pwm_lfo_src
Pwm dyn 2 / 30 0–127 /mks_70/pwm_dyn
Pwm env src 2 / 31 0–127 /mks_70/pwm_env_src
Waveform 2 / 48 0–127 /mks_70/waveform
Lfo delay 2 / 49 0–127 /mks_70/lfo_delay
Lfo rate 2 / 50 0–127 /mks_70/lfo_rate
Lfo2 depth 2 / 51 0–127 /mks_70/lfo2_depth
Sync 2 / 52 0–127 /mks_70/sync
Waveform 2 / 53 0–127 /mks_70/waveform
Lfo delay 2 / 54 0–127 /mks_70/lfo_delay
Lfo rate 2 / 55 0–127 /mks_70/lfo_rate
Lfo1 depth 2 / 56 0–127 /mks_70/lfo1_depth
Sync 2 / 57 0–127 /mks_70/sync
T1 2 / 58 0–127 /mks_70/t1
L1 2 / 59 0–127 /mks_70/l1
T2 2 / 60 0–127 /mks_70/t2
L2 2 / 61 0–127 /mks_70/l2
T3 2 / 62 0–127 /mks_70/t3
L3 2 / 63 0–127 /mks_70/l3
T4 2 / 64 0–127 /mks_70/t4
Key follow 2 / 65 0–127 /mks_70/key_follow
T1 2 / 66 0–127 /mks_70/t1
L1 2 / 67 0–127 /mks_70/l1
T2 2 / 68 0–127 /mks_70/t2
L2 2 / 69 0–127 /mks_70/l2
Attack 2 / 74 0–99 /mks_70/attack
Attack 2 / 75 0–511 /mks_70/attack
Attack 2 / 76 0–511 /mks_70/attack
Attack 2 / 77 0–511 /mks_70/attack
Key follow 2 / 78 0–127 /mks_70/key_follow
Attack 2 / 79 0–99 /mks_70/attack
Attack 2 / 80 0–511 /mks_70/attack
Attack 2 / 81 0–511 /mks_70/attack
Attack 2 / 82 0–511 /mks_70/attack
Key follow 2 / 83 0–127 /mks_70/key_follow

SysEx commands

Command Arguments Name to send
Total volume val: u7 /mks_70/total_volume
Key mode 1 val: u7 /mks_70/key_mode_1
Porta time val: u7 /mks_70/porta_time
Bend range 1 val: u7 /mks_70/bend_range_1
At vibrato val: u7 /mks_70/at_vibrato
L u balance val: u7 /mks_70/l_u_balance
Key mode 2 val: u7 /mks_70/key_mode_2
Bend range 2 val: u7 /mks_70/bend_range_2
Volume val: u7 /mks_70/volume
Brilliance val: u7 /mks_70/brilliance
U a tone val: u7 /mks_70/u_a_tone
Key assign val: u7 /mks_70/key_assign
Hold val: u7 /mks_70/hold
Portamento val: u7 /mks_70/portamento
Upper val: u7 /mks_70/upper
Shift val: u7 /mks_70/shift
Unison detune val: u7 /mks_70/unison_detune
Lfo mod depth val: u7 /mks_70/lfo_mod_depth
Bender val: u7 /mks_70/bender
Lower val: u7 /mks_70/lower
Dual detune val: u7 /mks_70/dual_detune
L b tone val: u7 /mks_70/l_b_tone
Level val: u7 /mks_70/level
Mode val: u7 /mks_70/mode
Play val: u7 /mks_70/play
Time val: u7 /mks_70/time

Performance MIDI

Notes, pitch bend and any CC are also available: /mks_70/note/on <note> <velocity>, /mks_70/cc/<number> <value>, /mks_70/pitchbend <0-16383>, /mks_70/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.

Frequently asked questions

How many parameters of the Roland MKS-70 can be controlled over MIDI?

SynthHub's map of the Roland MKS-70 lists 164 NRPN 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-70?

Yes: SynthHub's hosted MCP server knows the Roland MKS-70's MIDI map, and its browser relay lets the agent send it parameter changes or load a sound, each sound change confirmed by you.