Help & Documentation

• Make sure your device is powered on and connected via a USB data cable (charge-only cables won’t work). Also avoid cheap USB hubs or cables of questionable quality.
• Close other MIDI apps - DAWs, MIDI editors, or similar software can prevent EP Toolkit from detecting your device.
• Try unplugging other MIDI controllers or interfaces, as having multiple MIDI devices connected can sometimes cause conflicts.
• Open and close the app, or try restarting the device while the app is open.

Each project card represents one project slot on your device and shows the following information:

Each card has four action buttons:

• Reload - re-downloads the project data from the device. Useful if you have made changes on the device and want to refresh the project in the app.
• Backup - saves this single project as a .ppak file.
• Edit - opens the project editor to edit scenes and patterns.
• Export - opens the export page to convert the downloaded project to a DAW format. The Export button is only available after the project has been downloaded or when a project was loaded from a backup.

Click the small play button in the top-left corner of a downloaded project card. It plays the scenes in order, and the button turns into a stop button.

The scene strip shows where you are. Click a scene to play from there, or drag the strip sideways if there are too many scenes to fit.

Samples may take a moment to load first. Playback comes from your computer, not the EP, so it may sound a bit different. It uses the saved project, not unsaved changes in the editor.

Each column is a scene, and the four rows are groups A, B, C, and D. A01, B02, and so on are the patterns assigned to that scene. The little note previews help you tell them apart. Scroll sideways to see more scenes.

Nothing is sent to the device until you click Save to device. If you opened a backup, the button says Save to backup file instead.

Undo (Ctrl/Cmd+Z) takes back one edit. Discard takes you back to the last saved version. Reload downloads the project from the device again.

At the bottom, Renumber scenes closes gaps in scene numbers, and Remove unused patterns deletes patterns no scene uses. Clear all leaves one empty scene and clears the patterns, but keeps your pads and project settings.

Each device group (A/B/C/D) can have up to 12 fader parameters. Static values are baked into the exported project as initial settings. If a fader is automated (recorded fader movements), automation envelopes are generated for each format (except REAPER).

Upload (Local → Device): drag and drop files from the left panel or from your OS file manager onto the device panel. A confirmation dialog will show smart options:

• Mix down to mono - stereo files are mixed to mono to save device storage.
• Trim silence - removes leading silence using -50 dBFS detection.
• Normalize levels - peak-normalizes to 0 dBFS.

Download (Device → Local): right-click selected samples and choose “Download”. Files are saved as .wav with the pattern 001 Kick.wav.

Move/Cut & Paste: right-click > Cut to copy samples to an internal clipboard, then right-click on a target slot > Paste to move them.

Use the waveform toolbar for one file, or select several files and right-click to process them together. Your original files stay untouched; edits are used for preview and upload. A green dot marks processed files.

• Remove leading silence - cut silence from the start of the sample.
• Normalize - raise the level so the loudest peak reaches 0 dBFS.
• Mix down to mono - combine stereo channels into one to save space.
• Reverse - play the audio backwards.
• Change sample rate - resample the audio. Lower rates save space without changing pitch or duration.
• Speed up ×2 - halve the duration and raise the pitch one octave.
• Slow down ×2 - double the duration and lower the pitch one octave.
• Trim - adjust the start and end points in the waveform before uploading.
• Process with CLAP plugins - apply an effect such as EQ, compression, or distortion to a sample.
• Clear processing (undo-arrow button) - reset all edits, including plugins, sample rate, and trim points. This resets the file, rather than undoing one step.

Choose Change sample rate from the toolbar or right-click menu for local or device samples. Presets range from 11,025 to 46,875 Hz; the dialog shows the estimated size. Lower rates save space without changing pitch or duration, but lose some high frequencies. For local files, Original removes the rate conversion.

Open the plugin dialog from the local waveform toolbar to apply a CLAP effect. Add your plugin folders in Settings → Folders.

Find plugins on CLAPDB or KVR Audio.

Apply one plugin at a time. To retry the same plugin with different settings, clear processing first.

Use the waveform toolbar for one sample, or select several and right-click to process them together. Audio edits are downloaded, processed, and uploaded back to the same slots on your device.

• Remove leading silence - cut silence from the start of the sample.
• Normalize - raise the level so the loudest peak reaches 0 dBFS.
• Mix down to mono - combine stereo channels into one to free up device storage.
• Reverse - play the audio backwards.
• Change sample rate - resample the audio. Lower rates use less device storage without changing pitch or duration.
• Trim - keep only the region between the waveform’s start and end points. Available for a single sample.
• Change root note - set the note that plays the sample at its original pitch.
• Change play mode - choose OneShot (play through), Key (follow the held note), or Legato (change pitch without restarting the sample).

For root note and play mode, choose a value and click Apply. These settings don’t affect samples already assigned to pads in projects.

• UI Scale - make the interface smaller or larger, from 80% to 150% in steps of 10%.
• Show project card artwork - show or hide the illustrations in project card headers.
• Folder tree - show local samples in expandable folders. Turn it off for a flat list grouped by folder.
• Mix down to mono, Remove silence from start, and Normalize levels - preselect these options in the upload dialog. You can still change them before each upload.
• Check for updates on startup - check for a newer version when the app opens. You can also check manually on the About page.
• Confirm before delete samples - ask before deleting samples from the device.
• Automatically download all projects when a device is connected - load all nine projects into the app when you connect. This doesn’t create a backup.

Type a path or use the folder button to browse:

• Backup folder - where project and full-device backups are saved.
• CLAP plugin folders - add up to five folders containing your CLAP plugins. The app also checks the usual CLAP install locations.

The local sample folder is chosen on the Samples page, and the export folder on the Export page. They’re separate from the backup folder.