Browser-based · No install · Web MIDI API

Edit your
vintage gear
from the browser.

Free tools for the Roland MT-32 and Korg EA-1. Connect your hardware via USB-MIDI and start editing — no software to install.

Free Chrome / Edge SysEx support No tracking No ads Open source spirit
Choose your editor
Roland MT-32

EMETERIO

Multi-Timbral Sound Module · 1987

Full SysEx editor for the iconic MT-32. Edit all 64 user timbres with complete LA synthesis control — WG, TVF, TVA, envelopes, bias points and more.

64 user timbre slots with folder management
Complete LA synthesis — all Partial parameters
TVF & TVA bias editors with interactive keyboard
SysEx import/export (.syx files)
Patch & Rhythm setup
Send All / Receive All via MIDI
Launch EMETERIO →
Opens in new tab · Requires Chrome or Edge with Web MIDI
📖 Read the manual
Korg EA-1

EA-1 LIBRARY

Electribe Analog Modeling Synth · 1999

Pattern library manager and live editor for the Korg EA-1. Store, organize and transfer up to 256 patterns — plus real-time synth control via NRPN.

256-pattern library with bank navigation
Full SysEx dump & restore per pattern
Live NRPN control — all synth parameters
Song mode with step sequencing
Pattern details: tempo, scale, swing, length
Sequential dump for TR-8 passthrough
Launch EA-1 Library →
Opens in new tab · Requires Chrome or Edge with Web MIDI
📖 Read the manual
How it works
01

Connect your gear

Plug your MT-32 or EA-1 via USB-MIDI or a MIDI interface. Make sure SysEx is enabled on your device.

02

Open the editor

Click Launch above. Chrome or Edge will ask for MIDI access — accept it. Select your device from the dropdown inside the editor.

03

Edit & transfer

Edit parameters in real-time or load a .syx file. Hit Send All to write your changes directly to the hardware.

Support the project