Moog Moogerfooger (1998–2018)
The Moogerfooger line was Moog’s series of analog effects pedals, introduced in 1998 and produced until 2018, when Moog ceased production of the entire family. Moog conceived them as the world’s first professional analog effects pedals. They were designed for guitarists, but also to work with modular synthesizers and other CV/gate-controlled gear - every unit has both audio and control voltage (CV) input and output jacks. The full lineup was eight units: the MF-101 Lowpass Filter, MF-102 Ring Modulator, MF-103 12-stage Phaser, MF-104M Analog Delay, MF-105 MuRF, MF-107 FreqBox, MF-108M Cluster Flux, and the CP-251 Control Processor. The CP-251 is an auxiliary CV utility, not an audio effect.
The MF-101, perhaps the most conceptually direct pedal in the line, is essentially a Moog synthesizer in a stompbox: an all-analog lowpass filter based on the classic Moog 904A module from the original modular systems, paired with an LFO and envelope follower. The review observed its cutoff range covers roughly 20 Hz to 20 kHz, with separate guitar-level and synth-level inputs and a mixer-level output. At high cutoff settings the filter can self-oscillate into a sine wave, and while Sound on Sound found it lacked the most aggressive sweep, the character was described as musical and organic.
The MF-105 MuRF (Multiple Resonance Filter Array) is a different beast. It's a bank of ten resonant filters in parallel, each with its own level slider and frequency selection, and you can sequence them in patterns. EQ Magazine (2004, p.18) hailed it as the “mother of all Moogerfoogers.” The MF-104M bucket-brigade analog delay became the most popular of the series. Its delay time runs from 45 ms to 900 ms in short mode and out to 3.8 seconds in long mode, with modulation, CV control of delay time, and a drive section. The MF-107 FreqBox added frequency modulation with both linear and exponential responses, plus a drive section. The MF-108M Cluster Flux, released in 2014 as the last pedal in the series, gave true stereo chorus, flanger, and vibrato using bucket-brigade chips. The CP-251 Control Processor rounds out the system with a four-channel mixer, LFO, noise source, slew rate limiter, and multiple attenuators.
Production years for the individual models, beyond the series span, are thinly documented. The MF-108M’s 2014 introduction and the 2018 whole-line discontinuation are the firmest dates on record. The MF-104M and MF-108M have since become collectible, and used prices rose after production ended. Specific secondhand values are not documented here. No original retail prices, dimensions, or detailed service information have surfaced in the available record.
Known specs
- MF-101: analog lowpass filter (based on Moog 904A), LFO, envelope follower; cutoff roughly 20 Hz–20 kHz; guitar- and synth-level inputs; mixer-level output
- MF-102: classic analog ring modulator with fixed and adjustable carrier oscillators
- MF-103: 12-stage phaser with rate and resonance controls
- MF-104M: bucket-brigade analog delay; 45 ms–900 ms (short), 900 ms–3.8 s (long); CV control of delay time; drive section; 12V DC power
- MF-105 MuRF: bank of 10 resonant filters in parallel, each with level slider and frequency selection; pattern sequencing
- MF-107 FreqBox: FM capabilities (linear and exponential) plus drive section
- MF-108M Cluster Flux: true stereo chorus, flanger, and vibrato via bucket-brigade chips; CV inputs; 12V DC power
- CP-251: control processor with 4-channel mixer, LFO, noise source, slew rate limiter, and attenuators
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