Yesterday Effects MS-Twenty Filter FX Pedal

U.K First

The Yesterday Effects MS-Twenty Filter captures one of the most famous synth filters in music history, the unmistakable character of the Korg MS-20, reimagined as a standalone analog pedal. Designed for guitarists, bassists, synth players, and sound designers, the MS-Twenty Filter delivers the warm, liquid tone shaping that made the MS-20 legendary, and with no synth required.

Featuring four intuitive controls; Volume, Resonance, Frequency, and a toggle to switch between high-pass and low-pass filtering, this analog circuit gives you expressive, dynamic control over your tone. It’s a faithful recreation of the later OTA-based MS-20 filter, known for its smoother response, controllable distortion, and reduced noise floor compared to earlier designs.

Use the expression input to take full control of the Frequency knob for live sweeps, wah-like textures, or evolving ambient shifts. Whether you’re sculpting synth like tones, warming up guitar leads, or adding movement to loops, the MS-Twenty Filter opens up an entire world of analog character and creative tone shaping.

First introduced in 1978, the Korg MS-20 became a studio favourite.  Its filter so beloved that artists began using the synth purely as a standalone unit to process external sounds. The Yesterday Effects MS-Twenty Filter brings that same magic into a compact, pedalboard friendly design built for today’s tone hunters.

Smooth, musical, and endlessly expressive, this is the heart of a classic synth, reborn for your creative signal chain.