Ringside for K.O. II
See everything
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
See everything your K.O. II hides - every pad, fader and FX - and edit safely with audition and automatic backups. The companion built for the EP-133.
Ringside is the companion app for the teenage engineering EP-133 K.O. II. Plug your K.O. II into your iPhone or iPad over USB and Ringside shows everything its three-digit screen hides.
See every pad at a glance: real sample names, play mode, volume, pitch, pan, time-stretch and choke groups across all four groups (A to D), plus each fader's job, the master FX, and your library usage.
Edit with confidence. Change a pad's settings, then audition the sound on your phone before you send a single byte to the device. Every change is backed up first and byte-verified, and you can undo your last two edits at any time.
Move the master FX X/Y live, take control of tempo and transport as the MIDI clock master, and find every control and every system-setting code in plain English.
Ringside talks to the K.O. II over standard USB MIDI and its file protocol. No account, no sign-in, nothing leaves your device.
Not affiliated with teenage engineering. EP-133 and K.O. II are referenced only to describe the hardware Ringside works with.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, DEESTECH HOLDINGS LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- DEESTECH HOLDINGS LLC
- Size
- 1.6 MB
- Category
- Music
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Ringside Pro $7.99
- Copyright
- © 2026 DEESTECH HOLDINGS LLC
