Teenage Engineering EP-133
Best Friend for the EP-133 K.O. II
The EP-133 K.O. II gives you twelve pads and a 3-char display. Best Friend gives you the rest of the screen: every pad setting laid out at once, a full sample editor, and backups you can actually recall.
iPhone · iPad · Mac — one purchase
What Best Friend adds to the EP-133
Every EP-133 pad setting on one screen
Trim, attack and release, volume, pitch, pan, play mode, time-stretch, and MIDI channel — visible and editable together, with the waveform above them, all with hardware control. No menu diving on the hardware necessary.
See a whole EP-133 bank at once
Every pad in the group as a grid of waveforms and names, laid out the way the hardware is. Move through A, B, C, and D without losing your place.
Bank Snapshots
Arrange a bank on the EP-133, snapshot it, and recall it later — even on a different device. Project and system backups cover everything else.
Performance effects per pad
Toggle mute, pitch up, pitch down, and reverse on individual EP-133 pads while the whole bank stays in view.
A real sample editor
Crop, normalize, reverse, repitch, flatten stereo to mono, and change sample rate. Then stack 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 the levels or mute a track before it hits an EP-133 pad.
FAQ
EP-133 K.O. II questions
Does Best Friend work with the Teenage Engineering EP-133 K.O. II?
Yes. The EP-133 K.O. II is fully supported, including the pad editor, whole-bank view, performance effects, sample library, stem splitting, and Bank Snapshots. Best Friend also ships an EP-133 theme in both light and dark mode.
What cable do I need to connect an EP-133 to an iPhone?
Use a USB-C to USB-C data cable to connect your EP-133 K.O. II 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-133 K.O. II?
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-133 K.O. II. Every backup is named and dated, and any of them can be loaded back in one tap.
Can I get samples onto the EP-133 in bulk?
Yes. Import samples from Files or pull audio straight out of a video, then select as many as you like and move, share, or delete them in one pass. You can also drag and drop to reorder samples or reassign pads across the project.
Can I build multi-samples on the EP-133?
Multi-sample building and editing is available on the EP-40 and EP-1320. On the EP-133, Best Friend covers pad editing, the whole-bank view, the full sample editor, stems, and backups.
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-133 K.O. II itself needs no update — the app talks to it over USB.
Other EP-Series gear
- Best Friend for the EP-40 Riddim → Best Friend is the unrivalled companion app for the Teenage Engineering EP-40 Riddim. Build multi-samples, reach the Supertone settings, edit pads, and back up your projects 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.