teenage engineering EP-136 K.O. sidekick – compact mixer and creative hub for the EP series

Some devices simply do their job. Others completely transform the way your entire setup works. The teenage engineering EP-136 K.O. sidekick definitely belongs to the second category. This compact stereo mixer, USB audio interface and performance effects processor was designed to connect your ideas, instruments and portable gear into one flexible and creative music-making system.

Designed especially for the EP series samplers, the sidekick works perfectly with devices like the EP-133 K.O. II, EP-1320 Medieval and EP-40. But it does not stop there. You can also connect smartphones, synths, grooveboxes, audio players and other compact instruments. Wherever audio exists, the sidekick is ready to make it more interesting.

Product features

The EP-136 K.O. sidekick combines multiple creative tools into one ultra-portable device. It features two stereo channels, an additional stereo AUX input, built-in USB-C audio interface functionality and expressive real-time effects processing.

Each channel includes dedicated gain, EQ and compression controls, giving you quick and intuitive access to sound shaping. The device also includes six Performance FX™ effects controlled by a pressure-sensitive performance pad, making transitions, effects and live manipulation feel immediate and musical.

With its compact dimensions and battery-powered operation, the sidekick is designed for modern mobile workflows, live performances and spontaneous music sessions.

Portable mixing, recording and performance control

The teenage engineering EP-136 K.O. sidekick is much more than a simple portable mixer. It acts as the creative center of a compact setup, allowing multiple devices to work together smoothly while adding effects, dynamics and flexible routing options.

The integrated USB-C audio interface supports four-channel stereo recording, allowing you to capture channel 1, channel 2, AUX input and the master output simultaneously. This makes it easy to record complete sessions, jams or live performances directly into your DAW.

High-quality 48 kHz / 24-bit AD/DA conversion ensures professional audio quality whether you are recording, monitoring or performing live. The sidekick also supports stereo playback from computers and smartphones directly into the mixer.

Three different EQ styles are available: DJ, studio and parametric. This allows the device to adapt to different workflows and musical situations, from energetic live transitions to detailed studio sound shaping.

The built-in Motion Control™ and Performance FX™ section adds movement and expression to your sound. Available effects include tape delay, tape, loop, tremolo, filter and siren. Combined with the pressure-sensitive performance pad, the sidekick becomes an expressive instrument for live creativity.

Beat matching is available independently for both channels, helping synchronize external audio sources quickly and naturally. The dedicated CUE output can be used for headphone monitoring or as an external effects send and return loop.

Product applications

On stage, the sidekick works perfectly as the central hub for portable live rigs. Connect two EP series samplers, grooveboxes or external audio devices and build a compact live performance setup without carrying a large mixer.

In the studio, the device becomes a fast and creative workflow tool. Quickly connect audio sources, apply effects, sketch ideas and record sessions without complicated routing or setup preparation.

The sidekick is also ideal for home listening setups, parties, collaborative jam sessions and mobile music production. Its compact format and battery operation make it easy to create music almost anywhere.

When connected to a computer via USB-C, the device functions as a compact audio interface with character, allowing simple recording and monitoring without unnecessary complexity.

Detailed technical specifications

• Device type: compact stereo mixer / USB audio interface / effects processor
• 2 stereo audio channels
• 1 stereo AUX input 3.5 mm
• 2 stereo inputs 3.5 mm
• Main stereo output 3.5 mm
• CUE output 3.5 mm
• USB-C audio interface
• 48 kHz / 24-bit AD/DA conversion
• 4-channel stereo recording
• Stereo playback from computer or smartphone
• 3 EQ modes: DJ, studio and parametric
• 6 integrated Performance FX™ effects
• Pressure-sensitive performance effects pad
• Dual-channel beat matching
• High-resolution color LCD display
• Power supply: 2 AAA batteries or USB-C
• Dimensions: 240 x 88 x 16 mm
• Weight: 300 g

Materials and construction

The sidekick features the signature teenage engineering design philosophy: minimalistic, compact and highly functional. Its slim and lightweight construction makes it easy to carry in backpacks, portable setups and travel rigs.

The device also supports physical integration with EP series units using standard LEGO pins, allowing users to build modular and visually unique portable systems.

Dedicated hardware controls for gain, EQ and compression provide fast access to essential functions during both studio work and live performances.

What’s included

• teenage engineering EP-136 K.O. sidekick
• USB-C cable
• User documentation

Summary

If you are looking for a compact device that can mix, record, process effects and connect multiple audio sources in one creative portable setup, the teenage engineering EP-136 K.O. sidekick is an excellent choice. It combines flexibility, portability and creative performance tools in a uniquely compact form factor designed for modern music creators.