File Manager

Browse, upload and download files on your EP device

Overview

The File Manager does what the official browser tool does but faster and with batch operations. Browse your device’s sample slots, upload new samples, download existing ones. File listing loads in seconds, not minutes.

The app caches samples in the background after your device connects. This means backups are nearly instant once the cache is populated. It’s a proper installed app, not a browser tab, so it works offline too.

Sample banks

The File Manager splits the 999 sample slots into tabs, one per bank. Which banks you see depends on the connected device.

EP-40 Riddim and EP-133 K.O. II

Both use the same ten banks:

KICK: slots 1-99
SNARE: slots 100-199
CYMB: slots 200-299
PERC: slots 300-399
BASS: slots 400-499
MELOD: slots 500-599
LOOP: slots 600-699
USER 1: slots 700-799
USER 2: slots 800-899
SFX: slots 900-999

EP-1320 Medieval

The EP-1320 has its own banks. The first five hold the factory sounds in slots 1-220. They’re read-only, so their tabs show a lock and you can’t upload over or delete those samples. Your own samples go in the five APERTO banks:

PERX: slots 1-69 (factory, read-only)
PHRASI: slots 70-114 (factory, read-only)
INSTRUM: slots 115-127 (factory, read-only)
SOLUS: slots 128-155 (factory, read-only)
SONUM: slots 156-220 (factory, read-only)
APERTO 1: slots 221-399
APERTO 2: slots 400-549
APERTO 3: slots 550-649
APERTO 4: slots 650-749
APERTO 5: slots 750-999

Hover over a tab to see its slot range and how many slots are in use. With a mouse, you can double-click a tab name to rename it.

Browsing device files

The File Manager displays all samples in a sortable table:

Slot: Sample slot number (1-999 on EP-40)
Sample Name: The filename of the sample
Type: Sample type badge (Oneshot, Key, Legato, Loop or Multi)
Channels: Mono or Stereo
Bit Depth: Audio bit depth (usually 16-bit)
Sample Rate: the sample’s audio sample rate
Duration: Length of the sample in seconds
Size: File size in KB or MB

Sorting

Click any column header to sort by that property. Click again to reverse the order, and a third time to return to the default sort. Use the category tabs at the top to filter by sample type.

Search & filtering

Type in the search bar to filter samples by name. Matching text is highlighted in the results. Filters persist when switching between category tabs. Each tab tooltip shows the number of filled slots in that category.

Auto-preview

Selecting a sample automatically plays a preview. Use the arrow keys to move through samples and hear each one as you go, handy for quickly auditioning what’s on the device.

Tabs

The File Manager supports multiple tabs so you can have several views open at once. Double-click a tab title to rename it, useful for labelling what you’re working on (e.g. “Kicks to replace”, “Live set samples”). Use the reset button to revert a renamed tab back to its default name.

Right-click any slot to access quick actions: Play, Rename, Download, Delete and Upload here.

Keyboard shortcuts

Delete / Backspace: Delete selected sample(s)
Enter / Space: Play selected sample
Arrow keys: Navigate between samples with auto-preview

Uploading samples to device

Adding new samples to your device:

Navigate to the target category : Click the tab for the category you want (Kicks, Snares, etc.)
Find an empty slot: Look for slots marked as empty or containing samples you want to replace
Click “Upload” on that slot: An upload button appears for each slot
Select your audio file: Choose a WAV, MP3 or AIFF file
Wait for transfer: The file will be uploaded via USB MIDI (this may take a moment for larger files). Each sample shows a disc that fills as it sends, with the time left underneath. Stop Sending finishes the sample on its way and stops there
Verify the upload: The table will update to show the new sample details

File Format Conversion

EP-PatchStudio automatically converts uploaded files to a device-compatible 16-bit WAV on import, so you can drop in a WAV, AIFF or MP3 and it’s handled for you.

The sample rate depends on the device. The EP-1320 Medieval plays every sample at 46,875 Hz, so from version 1.7.3 uploads to an EP-1320 are converted to 46,875 Hz. On current firmware, the EP-133 K.O. II keeps your file’s sample rate up to 65,535 Hz. Higher rates, and every rate on older firmware, are converted to 46,875 Hz.

Downloading samples from device

Backing up samples from your device:

Navigate to the category: Select the category containing the sample you want
Click “Download” on the slot : A download button appears for each filled slot
Choose save location: Select where to save the file on your computer
Wait for download: The sample will be transferred via USB MIDI

You can also download multiple samples by selecting them and using the batch download feature.

Batch rename

Select multiple samples and rename them in bulk using pattern tokens:

{n}: sequential number (1, 2, 3…)
{nn}: zero-padded number (01, 02, 03…)
{name}: original sample name
{slot}: slot number

ZIP export

Select multiple samples and export them as a single ZIP archive. Handy for backing up a set of samples or sharing them with others without doing a full device backup.

Trim to fit

Samples exceeding the 20-second duration limit can be trimmed to fit directly from the File Manager. Click “Trim to fit” to automatically truncate the sample to the maximum allowed length.

Recycle Bin

Before the app deletes, moves, swaps or replaces a sample on your EP, it keeps a copy in the Recycle Bin. If it can’t save that copy, it stops and tells you instead of losing the sample. The same goes for a sample a restore would write over.

The Recycle Bin is its own screen, at the bottom of the sidebar. It holds samples and Project Library projects for 30 days, unless you pin them. From there you can restore an item, pin it so it stays, save a copy to your computer or delete it for good. Empty Bin clears everything that isn’t pinned. Restore is part of Pro. Pinning, saving a copy and deleting for good are free.

If you delete a sample by mistake, you can bring it back from the Recycle Bin. It isn’t a backup.

Undo

The File Manager supports multi-step undo. If you rename, move or delete something by mistake, undo it immediately.

Deleting samples

Removing samples to free up space:

Locate the sample: Find the slot you want to clear
Click “Delete”: Confirm the deletion when prompted
Slot cleared: The slot is now empty and available for new samples

Warning: Deletion is Permanent

Deleting a sample from your device cannot be undone unless you have a backup. Always download important samples before deleting them.

Sync status

The File Manager shows a “SYNCING” indicator when communicating with your device:

Initial sync: When you first connect or navigate to File Manager, all samples are loaded from the device
Upload sync: When uploading, the file is transferred and verified
Download sync: When downloading, the file is read from device memory
Delete sync: When deleting, the slot is cleared and updated

Wait for syncing to complete before disconnecting your device or navigating away from File Manager.

Tips & best practices

Organise by category: Use the category tabs to keep your samples organised
Download before deleting: Always back up samples you might want later
Check storage indicator: The top bar shows total samples and storage percentage
Use descriptive names: Rename files on your computer before uploading for easier identification
Monitor transfer times: Larger files take longer via USB MIDI, be patient
Keep device connected: Don’t disconnect during file operations
Create backups: Use the Backup & Restore feature for full device backups

Troubleshooting

Upload fails or hangs

Check USB connection is stable
Try a smaller file size
Ensure device has enough free storage
Restart the app and try again

File Manager shows empty slots but device has samples

Click “Refresh” to re-sync with device
Disconnect and reconnect the device
Restart EP-PatchStudio

Uploaded file doesn’t play correctly on device

Verify the source file plays correctly on your computer
Check the file isn’t corrupted
Try converting to WAV before uploading
Check the sample rate. The EP-1320 plays at 46,875 Hz and EP-PatchStudio converts uploads to it for you. On current firmware, the EP-133 K.O. II keeps any rate up to 65,535 Hz. Higher rates, and every rate on older firmware, are converted to 46,875 Hz

Samples on my EP-1320 play sharp

The EP-1320 plays every sample at 46,875 Hz, so a 44.1 kHz file sent as it is plays about a semitone sharp
Update EP-PatchStudio to version 1.7.3 or later, which converts uploads to the EP-1320 to 46,875 Hz
Send any samples you uploaded with an earlier version again

Faster than the browser tool

Batch operations, offline access, desktop convenience. 14 days of Pro, no sign-up.