Moogerfooger MF-108M Cluster Flux

The Moogerfooger Mf-108M Cluster Flux is to a standard chorus – top rated flanger pedal what the Saturn V is to a bottle rocket. Powered by a NOS Panasonic bucket-brigade delay chip, and boasting a six-waveform LFO, the Cluster Flux doesdeliver truly righteous analog chorusing, flanging, and other classic modulation effects—but its extraordinary control capabilities, including continuous control over nearly every parameter via external MIDI and CV sources and up to five optional expression pedals, place it into a unique orbit all its own.

The Cluster Flux’s LFO generates sine, triangle, square, saw, ramp, and random waveforms, which alone can produce an almost unlimited variety of modulation effects—from smooth and subtle to angular and asymmetrical to downright disturbing. Add to that the ability to vary parameters such as feedback and LFO rate and delay time in real time using expression pedals, and to tap in the LFO rate with the onboard footswitch, and you have one mean liveperformance or recording machine. And that’s not to mention the myriad possibilities made available by connecting the Cluster Flux to a MIDI keyboard or other controller, other CV-enabled gear (including the other seven Moogerfooger pedals), or your DAW’s sequencer. Besides syncing LFO speed to track tempo via MIDI Clock, the latter option allows you to automate parameter changes via Control Change messages, and even access “hidden” functions, such as multiplying the delay time as many as eight times and subdividing it using 11 different note values. Whoa!

In fact, the Cluster Flux has such a robust feature set that it isn’t possible to even mention everything here, but a few standouts are the Feedback control’s ability to generate positive and negative feedback (for hollowed-out and “throughzero” flange effects), the ability to double the range of the LFO rate (to .025Hz-100Hz) using an expression pedal, a MIDI note “Spillover” effect for creating ringing comb-filter and drone effects, and a TRS Feedback Insert for processing the feedback signal with an external device such as another pedal.

I tested the Cluster Flux in mono into a Rivera Venus 6 combo, and in stereo into a Fractal Audio Axe-Fx II (note: the Right output may be configured for four types of stereo operation using internal DIP switches). In all cases the pedal sounded beautifully rich, fat, and warm—though, not surprisingly, the most dramatic effects were achieved in stereo. There can be a big difference between analog and digital chorusing and flanging, especially when the analog sound is produced with an old-school BBD chip such as this one. Besides the increased depth and dimensionality, there is an organic quality to the sound that is quite satisfying and musically inspiring. With lots of experimenting I was able to conjure up nearly every classic flavor of modulation effect, including ’60s-style psychedelic tape flanging, A/DA and Mutron-type sounds, and even Lexicon Prime Time II-style square-wave modulation jumps. Of course, the Cluster Flux is as much about creating exciting new sounds as it is about revisiting the past— but it is nice to know that it can do both. This is a unique – top chorus pedal with unparalleled capabilities, and a worthy addition to the venerable Moogerfooger line.

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