Item #: MOO MF102 LIST

Moog MF102 Moogerfooger Ring Modulator Pedal

Shop Moog MF102 Moogerfooger Ring Modulator Pedal from AMS with 0% Interest Payment Plans and Free Shipping.
Sorry! This item is no longer available.
Out of Stock:
Product Description

The all-analog ring modulator rebuilds your sound into two separate tones and then uses an internal carrier oscillator to spread those tones apart in the frequency spectrum. The higher the carrier frequency, the more the new tones are separated. The effects can be anything from slow, velvet-smooth tremelo, to chains jangling in a Chinese gong to classic “outer space” sounds. The LFO (Low Frequency Oscillator) imparts trills, vibratos, siren effects. You want unlimited new sounds? Here they are! Power supply included.

What is a Ring Modulator?
A ring modulator mixes your audio input signal with a carrier oscillator to produce sum and difference frequencies. 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.

The moogerfooger 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.

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, sweeps, swoops, and divebombs.

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 with expression pedals or external control voltages as well as by rotary panel controls. 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.


  • FREQUENCY: A rotary control which varies the carrier frequency over a six-octave range
  • RATE: A rotary control, which varies the LFO’s frequency from 0.1 Hz to 25 Hz
  • LFO AMOUNT: A rotary control which adjusts the amount that the LFO output sweeps the carrier oscillator
  • MIX: A rotary control which crossfades continuously from unmodulated to modulated audio
  • DRIVE: A rotary control, which adjusts the gain of the audio input
  • SQUARE-SINE: A rocker switch which chooses the LFO waveform
  • LO-HI: A 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 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)

Product Specifications


  • CASE: Black panel with hardwood sides - classic analog appearance
  • DIMENSIONS: 9" x 6" x 2-1/2"
  • NET WEIGHT: 2 lbs.
  • SHIPPING WEIGHT: 4 lb, including power adaptor and instruction manual
  • POWER REQUIREMENTS: 105-125 volt, 5W

Helpful Info about the Manufacturer
Phone:  800-948-1990 Warranty:  1 Year
DLocke from Washington Submitted: 1/6/2012
Product Rating

Outer Space Here I Come!
Product Rating
Your general opinion of this product.
Awesome array of sounds and tones with complete control.
Jaime from Woodbridge Va. Rocker. Submitted: 1/27/2011
Product Rating

So far so good. I have been gigging it for at least 2 years.
Your general opinion of this product.
Excellent Product. I have been playing for a number of years and have always in-corporated a ring modulator in my rig. All I can say is that I love it. Its just awesome, and I like old school anyway. The only thing is that I wish there was a expression pedal that allows me to switch it on and off without stomping on it!!!
Its a unique stomp box.
Any way I want it to be. You shape your signal, fast slow, change the frequency, I love it.
JUst what I expected.
Currently there are no discussions available for this item.
Related Items


Hosa CFS106 Guitar Patch Cable Molded Right Angle 6 Inch
Hosa CFS106 Guitar Patch Cable Molded Right Angle 6 Inch

MSRP: $5.45 Save: $2.00 (37%)

Ebtech HUM X Hum Eliminator
Ebtech HUM X Hum Eliminator

MSRP: $158.00 Save: $79.00 (50%)

Hosa ADC477 Universal AC Power Supply Selectable up to 12 VDC 1200 mA
Hosa ADC477 Universal AC Power Supply Selectable up to 12 VDC 1200 mA

MSRP: $29.25 Save: $12.30 (42%)

DiMarzio J06BK Guitar Instrument Jumper Cable 6 Inch Black
DiMarzio J06BK Guitar Instrument Jumper Cable 6 Inch Black

MSRP: $22.99 Save: $6.00 (26%)

Samson HP30 Stereo Headphones
Samson HP30 Stereo Headphones

MSRP: $39.95 Save: $15.00 (38%)

On Stage TCM9150 U-Mount iPad or Tablet Case
On Stage TCM9150 U-Mount iPad or Tablet Case

MSRP: $65.99 Save: $26.04 (39%)