Korg Kaossilator (2007–2016)

A compact, handheld dynamic phrase synthesizer with 100 built-in programs spanning acoustic, percussion, and electronic sounds

Overview

The Korg Kaossilator (model KO-1) is a portable dynamic phrase synthesizer released by Korg in 2007 and produced until 2016. Designed for intuitive real-time performance, it fits in the palm of your hand and lets you shape sound by sliding a finger across its touchpad—horizontal movement controls pitch, vertical movement adjusts timbre or filter cutoff. It comes with 100 preset programs that include acoustic instrument emulations, drum kits, and synthetic tones, making it a self-contained tool for live looping and sketching musical ideas. Despite its small size, it was adopted by performers and producers looking for immediate, expressive control over sound without the complexity of traditional synthesis programming.

Specifications

Model designation	KO-1
Product type	Dynamic Phrase Synthesizer
Form factor	Compact, handheld
Programs	100 programs including acoustic, percussion, and electronic sounds
Dimensions	106 mm (W) x 129 mm (D) x 29 mm (H)
Weight	154 g

Design

The Kaossilator features a touchpad interface that allows expressive, real-time control over both pitch and sound parameters. Its compact, handheld design includes responsive controls optimized for on-the-go performance.

Market

The original Korg Kaossilator (KO-1) has appeared on the secondhand market at prices around $100, reflecting its status as an accessible, niche tool for live performers and loop-based musicians.