Moog Moogerfooger MF-101 Lowpass Filter Pedal

Classic Analog Lowpass Filter Effects Processor for Guitar, Bass, or Synthesizer
Moog Moogerfooger MF-101 Lowpass Filter Pedal image 1
Moog Moogerfooger MF-101 Lowpass Filter Pedal image 1
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Moog Moogerfooger MF-101 Lowpass Filter Pedal
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The Moogerfooger Lowpass!

The Moog Moogerfooger MF-101 Lowpass Filter is the real deal. This is the classic Moog filter that changed the sound of electronic music. Go on - reach out and sweep the filter with the Cutoff knob. Or use the Envelope section to do it automatically. Plug in one or more expression pedals or control voltages to do it. Or do all three. This pure analog filter sounds fat and juicy - and not at all like its digital brethren. Fortify your sonic arsenal with the best-sounding, most playable filter in the cosmos: the Moog Moogerfooger MF-101.

Moog Music Moogerfooger MF-101 Lowpass Filter at a Glance:
  • Why you need an analog lowpass filter
  • Boatloads of sound-shaping mojo
  • A bona fide Moog
Why you need an analog lowpass filter

If you're into making music, the Moog Moogerfooger MF-101 is a must-have. Simply put, a lowpass filter removes high frequencies from a sound, rendering it mellower, more muted. The lower you move the cutoff frequency, the more muted your sound. You can think of it like a window shade: as you pull the shade down, it omits the light that's coming in the top of the window, then the light from the middle, and finally all the light. When you sweep the MF-101 Lowpass Filter's Cutoff control, it does the same thing to your sound spectrum. At this juncture, it's worth mentioning that analog is king here; lowpass filters are one area where digital doesn't quite make the grade. Analog lowpass filters sound satisfyingly fat and punchy, and they behave differently from their digital brethren, even allowing you to drive them into self-oscillation with judicious use of their resonance control.

Boatloads of sound-shaping mojo

With its Signal Mix, Cutoff Frequency, Resonance Amount, and Envelope Amount rotary controls, the Moog Moogerfooger MF-101 gives you boatloads of sound-shaping mojo. What's more, you get a choice of 2-pole or 4-pole settings - for brighter or deeper filter frequency response - courtesy of a rocker switch. Another rocker selects between smooth and fast envelope follower response. Want to keep your hands free for playing? The Lowpass Filter's parameters can be controlled with expression pedals or external control voltages (as well as the unit's addictively tweakable knobs).

A bona fide Moog

The MF-101 Lowpass Filter was designed by the legendary Bob Moog. It incorporates a bona fide Moog filter plus an envelope follower for dynamic control over filter sweeps. Use the MF-101 Moogerfooger with keys, guitar, bass, samples, or even recorded tracks, for the ultimate in real-deal analog filter effects, unbesmirched by contact with the digital world! And the MF-101's pedigree? This Moogerfooger is a direct descendant of the original Moog modular synthesizers. Need we say more?

Moog Moogerfooger MF-101 Lowpass Filter Features:
  • Cutoff control varies the filter's cutoff frequency over an eight-octave range
  • Resonance control varies the shape of the filter's response from pure lowpass to actual oscillation
  • Envelope Amount control adjusts amount of input signal envelope sweep on filter cutoff frequency
  • Mix control crossfades continuously from unfiltered to filtered audio
  • Drive control adjusts the gain of the audio input
  • Smooth-Fast rocker switch selects between smooth and fast envelope follower response
  • 2-pole/4-pole rocker switch chooses between 2-pole (bright) and 4-pole (deep) filter frequency response
  • Level - a 3-color LED used to set the Drive control
  • Env - an LED that indicates the strength of the envelope voltage
  • Bypass - a 2-color LED that lets you know whether the filter is on or bypassed
  • On/Bypass - a rugged, smooth-acting stomp-style actuation switch
  • Included 110v power supply for use in US or Canada
Juice your sonic palette with the Moog Moogerfooger MF-101 Lowpass Filter!

Additional Media

Moogerfooger MF-101 Lowpass Filter - Black User Manual
Best Effects Pedals for Synths and Keyboards
Win a Little Phatty from IK Multimedia & Moog Music

Tech Specs

Pedal Type Filter
Inputs 1 x Instrument
Outputs 1 x 1/4"
Height 2.5"
Width 6"
Depth 9"
Weight 2 lbs.
Power Supply Included Yes
Manufacturer Part Number MF-101-0003

Customer Reviews

Based on 4 reviews
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Inspired and Unlimited

This is truly one of the best pedals ever created. Its sound is inspiring and the potential to customize that it is unlimited. I know a lot of bass players in the funk, jam, and live electronic genres and we all own one Moog (if not more) and all set it differently. I like to run the Res. Real hot and then sweep in and out with the Cutoff, running it all into delay to create “Space Invader”/out-of-this-world sounds. It does take some time to learn how to play the pedal correctly; however, once you get over the hump it will become the cornerstone of your pedal set up.
Music background: Semi-Pro Touring Musician

This Keyboardist Loves it!

This was purchased for use for two songs in our band. (Heart - Magic Man, and Head East - Never Been Any Reason). It is used with my old trusty Roland RD500 that I've had for almost 20 years now. I set the sound on a synth for one and strings for the other and have been able to make the sounds similar to what I need. I have spent a few hours of practice with it at home prior to gigging with it and have only used it 3 times now. We have been pleased with what is has done thus far. There is still a bit of a learning curve. I believe I just need to remember to crank up my volume pedal while I'm using it. Also, sometimes I have a tendency to want to rotate the Cutoff knob too quickly and it just needs a slower rotation at times to get the right sound pushed out. I initially set it up like the manual said, then I just have placed a tweak here or there to make it work for me. The Heart songs requires that infamous little hum in the low/high frequency ranges and in that case I pump the resonance up to almost 8 and then adjust the cutoff knob slowly to the left and then back up the right as I play the keys. I've also purchased a laptop stand to be able to keep this thing at my immediate left while playing, for easy access.
Music background: Gigging Keyboardist

Don't be is s good way to get started. Great with a bass!

I am a newbie when it comes to analog synths; however this is one of two Moogerfoogers I purchased after doing my research. I also bough the MF-102 Ring Modulator. To get the most out of it, you need an expression pedal. It sounds great with my bass and guitar. I use it with my RC 300 looper, which has opened up lots of possibilities to create moving effects and tone shaping. This is not the "set it and forget it" type of pedal, you should go deep and experiment. The analog tone sounds very good when I use with my Fender HotRod Deluxe III amp as well. It totally screams deep and rich through my PA system as well.
Music background: pro gigging guitarist, jazz, blues, etc

A true disappointment

I thought I would purchase a envelope filter after my motorcycle wreck that I lost use of my left leg and couldn't use my wah pedal anymore. I have a Moog ring modulator that I really like so I thought this would be a great envelope filter. I was wrong, this box is so noisy I couldn't get my noise gate to silence it without cutting out some of my guitar playing. I've had a chance to use the Electro-Harmonix Qtron + and I feel it's a way better effect pedal, not only is it way quieter, the range of it works best with guitar and bass.
Music background: Semi-pro Musician and Electronic Technician in the music field.

Sweetwater Advice

Nick Schenkel

The Moog Moogerfoofer MF-101 Low Pass Filter is the stuff of legends. You can use it as a CV or expression pedal controlled filter, sure. But where it really starts getting interesting is when you start pushing the Resonance on the unit so far that it self-oscillates! Combining a Filter this pure and clean with an Envelope follower creates amazing potential for sound design. It's a small slice of Analog-Synthesis-Heaven... Enjoy!
See also: Wah Pedals, Moog, Moog Wahs and Filters, Moog DJ Effects