EP-PatchStudio

In-app purchases
Content rating
Everyone
5+
Downloads
Content rating
Everyone
Users Interact, In-App Purchases
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About this app

EP-PatchStudio builds sample kits and multisamples for Teenage Engineering's EP-series samplers, then sends them to your device over USB. It also backs up your projects and lets you manage the samples on your device from your phone or tablet.

If you own an EP-133 K.O. II, EP-1320 Medieval or EP-40 Riddim, you know the squeeze: great sounds, a tiny screen and a slow road from a sample on your phone to a pad on your sampler. This app is the shortcut. Import audio, trim it, build a kit and load it onto the hardware.

WHAT YOU CAN DO
- Import WAV and AIFF files from your phone or a cloud drive
- Trim, fade, loop and tune samples by touch, in one-shot, key or loop mode
- Create multisamples for the EP-40 Riddim, mapped across the keyboard
- Normalise, trim and rename a whole batch of samples in one pass
- Browse, preview and replace the samples on your device in the File Manager
- Back up your device and keep every backup in a library you can restore from
- Open a project to see its pads and patterns on a timeline, then export MIDI, stems or an Ableton Live set
- Save favourite samples as packs and push them to any EP device in one go

WORKS WITH
- EP-133 K.O. II
- EP-1320 Medieval
- EP-40 Riddim

Multisamples are EP-40 Riddim only. You connect with a USB-C cable, so your phone or tablet needs USB host (OTG) support. Most recent Android devices have it.

No hardware to hand? You can still build and edit, then send it over when you plug in.

FREE AND PRO
The Sample Editor is free, with no ads and no account. Pro unlocks everything that talks to your device, plus the Batch Processor, backups, the Project Viewer, the Project Library and Sample Packs. Every Pro tool is open for 14 days after you install, with no sign-up. After that, Pro is a one-time in-app purchase through Google Play. Buy once, no subscription.

A NOTE FROM ME
I'm a solo developer and a sampler nerd. I built EP-PatchStudio because I wanted grown-up software for these little machines, and I keep improving it based on what the community asks for. If something is missing or broken, tell me.

Not affiliated with or endorsed by Teenage Engineering AB. EP-133 K.O. II, EP-1320 Medieval and EP-40 Riddim are trademarks of Teenage Engineering AB, used here only to describe compatibility.
Build kits and multisamples for EP-series samplers and send them over USB
Updated on
Oct 10, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Personal info and App activity
  • This app may collect these data types
    Location, Personal info and 3 others
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

A new layout for phones and tablets, with a bigger multisample keyboard, bigger Project Viewer pads and Support and More Apps in the menu.
Chop Sample shows the slices before it cuts, then puts them on a Drum Kit or saves them as WAV files.
Fit More gets more sounds onto a K.O. II with one tap.
Safer restores, a Recycle Bin for deleted samples and projects, plus smaller fixes.
Content rating
Everyone
Users Interact, In-App Purchases
Learn more

App support

About the developer
PHOTON CONSULTING LIMITED
hello@squarewave.studio
Brook Lodge Kilbrew ASHBOURNE A84 D925 Ireland
+353 89 962 6019