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Moog MF-102 Moogerfooger Ring Modulator

Item #: 
1274228068404   POS #:100941434
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The Moog 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... Click To Read More About This Product

Available 03-23-2018 You will not be charged until order ships. Email me when this is in stock.

Gear returned in mint condition. If you're looking for a virtually new instrument in possibly less-than-perfect packaging, this is a great value.
  • Includes 45-Day, No-Hassle Returns
  • Includes full manufacturer's warranty
Gear returned in great condition, with only minor signs of use, such as slight scuffs or pick marks. It looks and plays like new and may be considered an equivalent to display units found in retail stores.
  • Includes 45-Day, No-Hassle Returns
  • Includes full manufacturer's warranty
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The Moog 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-controlled 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 its 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.

Power supply is included for use with 110 VAC.


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.
Bypoass, a two-color LED that tells whether the ring modulator is on or bypassed.
On/Bypass, a rugged, smooth-acting stomp switch

6"W x 2-1/2"H x 6"D
2 lb.
Pro Coverage
Manufacturer's Warranty
Moog music warrants each instrument to be free of defects in material and workmanship for a period of one year after delivery to the retail purchaser. The warranty is void if the instrument has been modified in any manner other than in accordance with written instructions from Moog Music, Inc., of if the defect or failure is judged by Moog Music, Inc., to be caused by normal wear, accident, neglect, or conditions of operation other than those specified in the instruction manual.

This warranty is subject to verification by Moog Music, Inc., that a defect or failure exists and that the original purchaser complies with the following:
1. Warranty Registration Card must be returned by the purchaser to Moog Music, Inc., within 10 days of retail purchase.
2. Moog Music, Inc., must be notified by telephone, or in writing, of the problem to secure authorization to return the instrument to the factory or warranty center.
3. The instrument must be shipped prepaid. It will be returned with shipping charges prepaid by Moog Music, Inc.


Moog Music, Inc., authorizes no persons to assume for it any warranty or other liability in connection with the sale of Moog Music, Inc., instruments.

Moog Music, Inc., reserves the right to make changes in design at anytime without incurring any obligation to install same on units previously purchased.

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  • Repair costs covered for up to five years from date of purchase
  • Repair authorization-toll-free by phone or via the web
Customer Reviews

Review Snapshot

by PowerReviews
MF-102 Moogerfooger Ring Modulator

(based on 3 reviews)

Ratings Distribution

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Reviewed by 3 customers

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(30 of 37 customers found this review helpful)


The Ring Mod

By Swimming Bird

from Washington, DC

Comments about MF-102 Moogerfooger Ring Modulator:

The Moog MF-102 is amazing, even for a ring mod. While the others out there (namely the Electro-Harmonix ring mod) concentrate on all of the completely crazy sounds ring modulators are capable of, the Moog gives you the full range of mellow tones as well. Ring mods are hard to explain at best, but they tend to create dissonant tones -- they operate in non-melodic intervals, adding or multiplying signals together without thought of pitch. Thus a ring mod is essentially a non-melodic phaser that is capable of self-oscillation. Very cool, but strictly for experimentalists.

(7 of 8 customers found this review helpful)



By evan

from California

Comments about MF-102 Moogerfooger Ring Modulator:

i have always used digital boards up untill a while ago when i decided to build myself an individual pedal analog(or mostly analog) board. For modulation theres nothing better. this is by far the best in analog pedals. you can purchase expression pedals to adjust everything! unfortunately however you cant use a pedal to switch it from low frequency to high. moog is a great company and i am continuing to purchase their moogerfoogers.

(3 of 18 customers found this review helpful)


still waiting....

By kurt

from durham, nc

Comments about MF-102 Moogerfooger Ring Modulator:

what an awful ordering experience. i paid for this product over 2 weeks ago and i have yet to receive it. UPS claims they delivered it, but didn't. I am left to wait while an investigation takes place. I cannot believe guitar center would not ship me another one while UPS takes 8-10 business days to figure it out. way to punish the client guitar center!

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