Best Friend for K.O. II

12 reviews
Content rating
Everyone
100+
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Everyone
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About this app

Best Friend is the unrivaled companion app for Teenage Engineering EP-Series Samplers. Connect your EP-133, EP-40, or EP-1320 via USB-C to manage your hardware, upload and edit new files, and see your pad settings.

Scenes:
- See all notes across all banks in a Scene or Song
- See fader automation lanes for each bank
- Export REAL audio stems of every individual pad directly from your EP
- Navigate through the Scene timeline with automatic playhead following

Bounce and Export Audio Stems:
- Export REAL audio stems directly from the hardware WITHOUT AI separation for any Scene or Song
- Choose from every individual pads (all 48), group mixdowns, or stereo mixdowns
- Fader automation is included in the export
- Export MIDI data from a Scene or Song
- Bring your bounces into your DAW of choice for mixing

MIDI Controller:
- Build rich chords with a button. Pick major, minor, suspended, or diminished triads then add a 6th, 7th, or 9th for flavour
- Play the velocity-sensitive keyboard
- Arpeggiator with 4 modes, 6 rates, and 3 octaves synced to the hardware clock
- Configure your own custom chords to any of the Chord or Extension buttons
- Split each key into 1-3 zones for playing chords in alternate positions
- Add pitch bends or modulation to any chord

Sample Editing:
- Extract stems (drum, bass, vocal, guitar, and other instrument) from your samples
- Build and edit multi-samples on the EP-1320 or EP-40
- Use Repitch to reduce the file size
- Permanent cropping
- Increase volume with normalize
- Reverse playback
- Convert stereo to mono
- Change sample rate
- Apply effects: 3-band EQ; compression; distortion and saturation; octaver; phaser; chorus; tremolo; delay; and reverb
- Automatically detect and set the key
- Save default pad settings

Hardware Management:
- Bulk upload samples from your Files and Videos
- Bulk move, share, and delete samples
- Edit and replace samples in place
- Backup your Project or entire System
- Import Project and System from the official EP Sample Tool
- Extract Projects from your System Backups
- Preview stereo mixes of your Project Backups
- Save Bank Snapshots to share and recall later

Pads:
- Mute and unmute individual pads
- Apply performance effects to individual pads: mute, pitch up, pitch down, reverse
- Drag and drop pads to reassign them across groups
- See an entire bank of samples at once
- See the sample waveform along with its name and length
- See and edit the trim, attack, and release windows
- See and adjust volume, pitch, pan, mute, play mode, time-stretch, and MIDI channel
- See Supertone settings on your EP-40

Best Friend is not affiliated with Teenage Engineering in any way.
App for Teenage Engineering EP-133 K.O. II, EP-40 Riddim, EP-1320 Medieval
Updated on
Sep 11, 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.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection

Ratings and reviews

11 reviews
Nick Vicente
September 15, 2026
Amazing addition to my EP-133. So many incredible features that really unlock new possibilities with the device. incredible value. Best app I've used with the K.O. II. huge value.
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Joshua Salles (omghax)
September 20, 2026
WOOHOO 🙌 finally on Android! Please add EP-2350 features too 😇
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sam debell
September 26, 2026
Still early days on Android, and a couple of bugs to iron out, but simply the bounce feature alone turns my old abandoned ko ii from a toy into a production tool. That has huge value! Keep up the good work!
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What’s new

Best Friend is the unrivaled companion app for Teenage Engineering EP-Series Samplers. Connect your EP-133, EP-40, or EP-1320 via USB-C to manage your hardware, upload and edit new files, and see your pad settings.

- See all notes in a Scene
- Export every individual pad directly from your EP to mix in your DAW
- Edit and upload samples
- Apply effects
- Bulk move, share, and delete samples
- Make backups and Bank Snapshots

Best Friend is not affiliated with Teenage Engineering in any way.
Content rating
Everyone
Learn more

App support

About the developer
HOLT, BRIAN CHRISTOPHER
feedback@epbf.app
1008 Cambie St. #608 Vancouver, BC V6B 6J7 Canada

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