Teenage Engineering EP-133 K.O. II MIDI CC chart, NRPN and OSC map¶
The Teenage Engineering EP-133 K.O. II MIDI implementation: 5 CC, 4 drum sounds, each named, for Claude (MCP), SuperCollider or any OSC app.
| Device | Teenage Engineering EP-133 K.O. II |
|---|---|
| Vendor | Teenage Engineering |
| OSC prefix | /ep_133_k_o_ii |
| 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/teenage-engineering/ep_133_k_o_ii.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/teenage-engineering/ep_133_k_o_ii.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 ep_133_k_o_ii: ask “what can the Teenage Engineering EP-133 K.O. II do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (5)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/ep_133_k_o_ii/general/bank_select |
0 / 32 | 0–16383 | continuous | General | |
/ep_133_k_o_ii/general/vibrato |
1 | 0–127 | continuous | General | |
/ep_133_k_o_ii/general/sustain_pedal |
64 | 0–127 | continuous | General | |
/ep_133_k_o_ii/effects/fx_knob_x |
12 | 0–127 | continuous | Effects | |
/ep_133_k_o_ii/effects/fx_knob_y |
13 | 0–127 | continuous | Effects |
Drum sounds (4)¶
Send <address> [velocity] [note] [channel] to fire the sound (Note On).
| OSC address | Sound | Note(s) | Channel | Velocity |
|---|---|---|---|---|
/ep_133_k_o_ii/drum/group_a_pads |
Group A pads | 36–47 | omni | 1~127: Volume |
/ep_133_k_o_ii/drum/group_b_pads |
Group B pads | 48–59 | omni | 1~127: Volume |
/ep_133_k_o_ii/drum/group_c_pads |
Group C pads | 60–71 | omni | 1~127: Volume |
/ep_133_k_o_ii/drum/group_d_pads |
Group D pads | 72–83 | omni | 1~127: Volume |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /ep_133_k_o_ii/note/on <note> <velocity>, /ep_133_k_o_ii/cc/<number> <value>, /ep_133_k_o_ii/pitchbend <0-16383>, /ep_133_k_o_ii/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¶
How many parameters of the Teenage Engineering EP-133 K.O. II can be controlled over MIDI?
SynthHub's map of the Teenage Engineering EP-133 K.O. II lists 5 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 Teenage Engineering EP-133 K.O. II?
Yes: SynthHub's hosted MCP server knows the Teenage Engineering EP-133 K.O. II's MIDI map, and its browser relay lets the agent send it parameter changes or load a sound, each sound change confirmed by you.