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Sequential Prophet 600 MIDI CC chart, NRPN and OSC map

The Sequential Prophet 600 MIDI implementation: 31 CC, each named, for Claude (MCP), SuperCollider or any OSC app.

Device Sequential Prophet 600
Vendor Sequential
OSC prefix /prophet_600
Source πŸŽ›οΈ Derived from an Electra One community preset
Revision per Electra preset
Upstream electra-preset
Driver file devices/sequential/prophet_600.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 β€” 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/sequential/prophet_600.json --out-port <N> --in-port <M>

Then send OSC to 127.0.0.1:7777, for example:

osc-bridge osc-send /prophet_600/filter/cutoff 63

From Claude or any MCP client, the osc-bridge mcp server exposes this driver as prophet_600: ask β€œwhat can the Sequential Prophet 600 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
/prophet_600/filter/cutoff 23 0–127 continuous Filter
/prophet_600/filter/resonance 24 0–127 continuous Filter
/prophet_600/filter/flt_env_amount 25 0–127 continuous Filter
/prophet_600/filter/kybd_tracking 60 0–127 continuous Filter
/prophet_600/filter/flt_velocity 40 0–127 continuous Filter
/prophet_600/filter/exp_envelope 61 0–127 continuous Filter
/prophet_600/filter/attack 29 0–127 continuous Filter
/prophet_600/filter/decay 28 0–127 continuous Filter
/prophet_600/filter/sustain 27 0–127 continuous Filter
/prophet_600/filter/release 26 0–127 continuous Filter
/prophet_600/fast_envelope 62 0–127 continuous
/prophet_600/attack 33 0–127 continuous
/prophet_600/amp/decay 32 0–127 continuous Amp
/prophet_600/amp/sustain 31 0–127 continuous Amp
/prophet_600/amp/release 30 0–127 continuous Amp
/prophet_600/amp_velocity 39 0–127 continuous
/prophet_600/filter/exp_envelope 63 0–127 continuous Filter
/prophet_600/fast_envelope 64 0–127 continuous
/prophet_600/oscillators/frequency 16 0–127 continuous Oscillators
/prophet_600/oscillators/volume 17 0–127 continuous Oscillators
/prophet_600/oscillators/pulse_width 18 0–127 continuous Oscillators
/prophet_600/oscillators/saw 48 0–127 continuous Oscillators
/prophet_600/oscillators/triangle 49 0–127 continuous Oscillators
/prophet_600/oscillators/square 50 0–127 continuous Oscillators
/prophet_600/oscillators/frequency 19 0–127 continuous Oscillators
/prophet_600/oscillators/volume 20 0–127 continuous Oscillators
/prophet_600/oscillators/pulse_width 21 0–127 continuous Oscillators
/prophet_600/oscillators/saw 51 0–127 continuous Oscillators
/prophet_600/oscillators/triangle 52 0–127 continuous Oscillators
/prophet_600/oscillators/square 53 0–127 continuous Oscillators
/prophet_600/oscillators/fine 22 0–127 continuous Oscillators

Performance MIDI

Notes, pitch bend and any CC are also available: /prophet_600/note/on <note> <velocity>, /prophet_600/cc/<number> <value>, /prophet_600/pitchbend <0-16383>, /prophet_600/program_change <n>.

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

Which MIDI CC controls the filter cutoff on the Sequential Prophet 600?

CC 23 (0–127), named /prophet_600/filter/cutoff in SynthHub's map.

How many parameters of the Sequential Prophet 600 can be controlled over MIDI?

SynthHub's map of the Sequential Prophet 600 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 Sequential Prophet 600?

Yes: SynthHub's hosted MCP server knows the Sequential Prophet 600's MIDI map, and its browser relay lets the agent send it parameter changes or load a sound, each sound change confirmed by you.