MF-104S Analog Delay

Name: MF-104S Analog Delay
Price: 79 USD
Author: Moog

by Moog · Delay · Analog delay emulation

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MF-104S Analog Delay is Moog's software version of the MF-104 Moogerfooger analog delay, with stereo echo and ping-pong modes.

Tone and timing options range from loose analog to tight modern repeats, and it costs $79.

Best for: Guitars, Keys & Synths, Vocals, Sound Design. Genres: Rock & Indie, Electronic & EDM, Ambient & Cinematic.

Keywords: analog delay, dark, BBD, loose, warm, hardware emulation, ping-pong, tight, vocals, electric guitar, synths, mixing, modern, slapback, sound design, tempo-synced.

What it does

The MF-104S is Moog's plugin recreation of the MF-104 Moogerfooger analog delay, a pedal from 2000 designed by Bob Moog and his team. Moog describes it as "a rich, full-bodied delay and modulation circuit," built on bucket-brigade (BBD) delay emulation.

BBD delay: delay times from 40 to 800ms, with switchable 40–400ms and 80–800ms ranges, plus Delay Time, Feedback and Mix controls.
Type: stereo ECHO (the same delay time on both channels) or PING-PONG, which bounces the repeats across the stereo image.
Tone: Legacy, Analog and Modern settings change the EQ and filtering of the repeats; Legacy keeps the original's dark character.
Timing: choose tight digital timing or loose analog timing with the instabilities of the hardware.
Feedback Mode: routes feedback through the whole effect or through the delay line only.
LFO: a multi-waveform LFO with Rate and Amount controls for modulating the delay time.
CV inputs: virtual CV inputs for Delay Time, Feedback, LFO Rate, LFO Amount and Mix, each with attenuation, plus presets and multiple instances.

KVR lists version 1.3.0. It is also part of Moog's bundle of seven Moogerfooger plugins.

Source: Moog product page

When to use it

MF-104S is the pick for one specific sound: dark, warm bucket-brigade repeats with a vintage feel. Compared with EchoBoy or Timeless 3, it has far fewer styles and no multi-tap, groove or deep filter modulation, but its single voice is very characterful and quick to dial in. Unlike Galaxy Tape Echo or Delay TAPE-201, it models a BBD pedal rather than a tape unit, so the repeats are darker and smoother rather than saturated and wobbly. Its 800ms limit and lack of tap tempo make it less flexible than ValhallaDelay for long or performance-based delays.

Best for: warm tempo-synced echoes, slapback, and dark modulated repeats on guitars, synths and vocals.
Genres: rock, psychedelic, electronic and ambient.
Look elsewhere if: you want many delay types, long delays or tap tempo; EchoBoy, Timeless 3 or ValhallaDelay cover more ground.
Tip: Sound On Sound suggests Legacy tone for the authentic dark character, and the LFO on delay time for modulated warmth or Radiophonic-style effects.

What producers say

Reviewers found its dark, syrupy BBD tone hard to match with other delays, with missing tap tempo and longer delay times as the main gripes.

Sound On Sound (Robin Bigwood, 2023) called it "astonishingly dark-sounding" with "syrupy warmth and weight," and said other delays with filters got close but could not match it.
MusicRadar (Robbie Stamp, 2022) said it lets you "immerse" yourself "in psychedelic spaciousness," and praised the strict/loose timing and tone options.
Criticisms: no tap tempo, no option for the 1.4-second delay of some hardware versions, no MIDI Learn, and a window that can't be resized.

Where to buy

Tutorials and reviews

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