Moog Music MF-104S • Analog Delay
Moog Music MF-104S • Analog Delay

Moog Music MF-104S • Analog Delay

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A rich, full-bodied delay and modulation circuit that has remained highly sought after to this day

About the MF-104S Analog Delay

The MF-104S Analog Delay is a re-invention of Moog Music’s classic MF-104 analog effects pedal.

The MF-104 Analog Delay, introduced in 2000, added a lush, all-analog delay to the classic line of Moogerfooger effects. It incorporated a dual-range Bucket Brigade Device (BBD) providing a range of delay times from 40 milliseconds to 800 milliseconds. Later versions of the MF-104 offered tempo synchronization, and extensive time modulation options via a multi-waveform LFO. Designed by Bob Moog and his engineering team, the MF-104 was a direct descendant of the original Moog modular synthesizers, adapted to process, modulate, and play with inputs ranging from guitar, voice, and synthesizer to any imaginable audio source.

The MF-104 Analog Delay has been meticulously recreated as the MF-104S, capturing all of the warm, organic texture and character of the original analog delay circuitry, while adding 21st-century flexibility and ease of use.

With CV interconnectivity, stereo functionality, an extended feature set, the ability to run multiple instances, and presets, the MF-104S plug-in further tailors the classic Moogerfooger functionality to the modern digital creator.

MF-104S Expands on Classic Moogerfooger Pedal

The MF-104S also introduces unique features not seen on the hardware instrument, including:

TYPE switches between normal stereo ECHO with the same delay time in each channel or a PING-PONG bouncing stereo image delay.

TONE affects the EQ, filtering, and grittiness of the delayed audio signal with Legacy, Analog, and Modern settings.

TIMING can preserve tight digital timing or add loose timing instabilities.

FEEDBACK MODE reroutes the delay feedback either through the entire effect or only through the delay line to preserve the sonic characteristics of the input.

The MF-104S offers CV Inputs for Delay Time, Feedback, LFO Rate, LFO Amount, and Mix, as well as the capability to attenuate or soften these modulations.


  • For macOS 10.13 Intel or Apple Silicon, Windows 10 64-bit Intel systems or newer
  • Supported plug-in formats include VST3, AudioUnits, and Pro Tools AAX