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Moog Moogerfooger MF-102 Ring Modulator

Dolphin id:38165 Product SKU:MF-102

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The MF-102 Ring Modulator is a direct descendant of the original Moog modular synthesizers. It contains three complete modular functions: a ring modulator, a voltage-controlled carrier oscillator, and voltage-contolled dual-waveform LFO. It can be used to process any instrument-level to line-level signal.

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The MF-102 Ring Modulator is a direct descendant of the original Moog modular synthesizers. It contains three complete modular functions: a ring modulator, a voltage-controlled carrier oscillator, and voltage-contolled dual-waveform LFO. It can be used to process any instrument-level to line-level signal.

A ring modulator produces sum and difference frequencies between the audio input and a carrier oscillator. The ring modulator's LFO can be used to modulate the carrier frequency. The moogerfooger ring modulator can create effects ranging from subtle tremolo to harmonically rich distortion, gong-like sounds, sweeps, swoops, and divebombs. It can be subtle, or outlandish in it's use - you decide!

The moogerfooger ring modulator's control parameters are signal mix, carrier frequency, LFO rate, and LFO amount. All of the ring modulator's parameters can be controlled by the great feeling knobs that beg to be tweaked as well as with expression pedals or external control voltages. Panel switches select LFO waveform and carrier frequency range. 1/4" jacks are provided for audio input and output, pedal/control inputs, carrier input and carrier output. The heavy-duty yet smooth acting bypass switch allows tabletop or floor use.

Imagine that the ring modulator's carrier oscillator is producing a 500 Hz sine wave, and your input signal is a 100 Hz sine wave. The ring modulator's output will be a complex waveform. You will hear two pitches: 400 Hz and 600 Hz. You will not hear your original input or the carrier oscillator.

Watch Demo Video:


  • FREQUENCY rotary control, which varies the carrier frequency over a six-octave range. 
  • RATE rotary control, which varies the LFO�s frequency from 0.1 Hz to 25 Hz. 
  • LFO AMOUNT rotary control, which adjusts the amount that the LFO output sweeps the carrier oscillator. 
  • MIX rotary control, which crossfades continuously from unmodulated to modulated audio. 
  • DRIVE rotary control, which adjusts the gain of the audio input. 
  • SQUARE-SINE rocker switch, which chooses the LFO waveform. 
  • LO-HI rocker switch, which chooses between the low frequency carrier range (2 Hz to 130 Hz) and the high frequency carrier range (60 Hz to 4,000 Hz). 
  • LEVEL, a three-color LED that is used to set the DRIVE control. 
  • LFO, a LED that indicates the LFO rate. 
  • BYPASS, a two-color LED that tells whether the ring modulator is on or bypassed. 
  • ON/BYPASS, a rugged, smooth-acting �stomp switch.�

Jack Panel Features

  • AUDIO IN 1/4" phone jack - accepts any instrument-level or line-level audio signal from -16 dBm to +4 dbm. 
  • AUDIO OUT 1/4" phone jack - -4 dBm nominal output level. 
  • FREQUENCY, RATE, LFO AMOUNT, MIX, all of which are stereo 1/4" jacks that accept moogerfooger EP1 (or equivalent) expression pedals, or control voltages from two-circuit or three-circuit 1/4" jacks. 
  • AUX AUDIO IN - provides a means of applying an external signal to the ring modulator, in place of the carrier oscillator. 
  • LFO OUT jack - delivers the LFO voltage for use by other voltage-controlled devices. 
  • CARRIER OUT jack - delivers the carrier signal for use by other devices. 
  • +9V POWER INPUT jack - accepts standard 9 volt power adaptors (power adaptor included).

General Specifications

  • CASE: Black panel with hardwood sides - classic analog appearance. 
  • DIMENSIONS: 9" x 6" x 2-1/2" 
  • NET WEIGHT: 2 lb 
  • SHIPPING WEIGHT: 4 lb, including power adaptor and instruction manual. 
  • POWER REQUIREMENTS: 105-125 volt, 5W. 220 volt power adaptor available on special order. 
Image: Moog Moogerfooger MF-102 Ring Modulator

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Moog Moogerfooger MF-102 Ring Modulator Reviews



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I suffer from DiGeorge Syndrome (22q11.2 deletion). I raise money for Max Appeal which is a charity based on raising awareness of DiGeorge Syndrome & also finding out new information about this Syndrome, The charity was originally setup in 1999 in Birmingham\'s Children Hospital by a group of mum\'s who had a Baby or a Smaller Child who suffered from this Syndrome. Two years later Max Appeal was given charity status, And the two people in charge are Julie & Paul Wootton. They keep families informed via there website, forum, newsletters, AGM\'s, Special Day Trips Out & just by being there.

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Thank you for your time

Take Care

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