Teenage Engineering EP-40
Best Friend for the EP-40 Riddim
The EP-40 Riddim has depth the hardware cannot show you all at once — Supertone, multi-samples, per-pad detail. Best Friend puts it all on screen and gives you a real editor to feed it.
iPhone · iPad · Mac — one purchase
What Best Friend adds to the EP-40
Supertone settings, exposed
The EP-40 Supertone settings are surfaced directly in Best Friend, alongside the rest of the pad parameters instead of buried behind hardware menus.
Build and edit multi-samples
Layer samples into one playable instrument on the EP-40. Set the length, crop and loop each layer, preview it, then save the whole thing as a single waveform. Come back later and edit one layer without rebuilding the rest.
Every EP-40 pad setting on one screen
Trim, attack and release, volume, pitch, pan, play mode, time-stretch, and MIDI channel together with the waveform, plus hardware control over the trim window.
Bank Snapshots and backups
Snapshot a single EP-40 bank to recall later, back up the project you are working on, or back up the entire system — all named, dated, and one tap from being restored.
A real sample editor
Crop, normalize, reverse, repitch, flatten stereo to mono, and change sample rate, then add three-band EQ, 1176-style compression, distortion and saturation, Small Stone phaser, Juno chorus, tremolo, delay, and reverb.
Stems
Split any sample into isolated drums, bass, vocals, guitar, and instruments, then remix or mute before sending it to an EP-40 pad.
FAQ
EP-40 Riddim questions
Does Best Friend work with the Teenage Engineering EP-40 Riddim?
Yes. The EP-40 Riddim is fully supported, including multi-sample building, the Supertone settings, the pad editor, whole-bank view, stem splitting, and backups. Best Friend also ships an EP-40 theme in both light and dark mode.
Can I build multi-samples on the EP-40?
Yes. Best Friend can build and edit multi-samples on the EP-40. Layer several samples together, set the length, crop and loop each layer, preview the result, then save it as a single waveform. Individual layers stay editable afterwards.
Can I edit the EP-40 Supertone settings in Best Friend?
Yes. Supertone settings are available on EP-40 pads alongside the other pad parameters.
What cable do I need to connect an EP-40 to an iPhone?
Use a USB-C to USB-C data cable to connect your EP-40 Riddim to an iPhone, iPad, or Mac. Charge-only cables will not work. On a Lightning iPhone or iPad, use an MFi-certified Lightning to USB adapter together with a USB-IF certified USB-A to USB-C cable.
Can I back up my EP-40 Riddim?
Yes. Best Friend can take a Bank Snapshot of a single bank, back up the project you are working on, or back up the entire system on your EP-40 Riddim. Every backup is named and dated, and any of them can be loaded back in one tap.
What do I need to run Best Friend?
Best Friend requires iOS 26, iPadOS 26, or macOS 26 or later, and a Mac needs Apple silicon (M1 or later). Your EP-40 Riddim itself needs no update — the app talks to it over USB.
Other EP-Series gear
- Best Friend for the EP-133 K.O. II → Best Friend is the unrivalled companion app for the Teenage Engineering EP-133 K.O. II. Edit every pad setting, see a whole bank at once, split stems, and take Bank Snapshots from iPhone, iPad, or Mac.
- Best Friend for the EP-1320 Medieval → Best Friend is the unrivalled companion app for the Teenage Engineering EP-1320 Medieval. Build multi-samples, edit every pad setting, split stems, and back up your projects from iPhone, iPad, or Mac.
Compatibility
What you'll need
Best Friend is an extended display and management tool that requires a connection to the Teenage Engineering hardware. Use a USB-C to USB-C data cable.
On a Lightning iPhone or iPad, use an MFi-certified Lightning to USB adapter with a USB-IF certified USB-A to USB-C cable.
Requires iOS 26, iPadOS 26, or macOS 26 or later. On a Mac you'll need Apple silicon.
Your EP needs a Best Friend.
Download now.