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Line 6 MM4

Images MM4

User Reviews

Not convinced

By 8oris, 14/05/2012
<b>What are the effects, or types of effects available?</b>
Multi-purpose dedicated to the modulation, we can find choruses, flangers, phasers, tremolos, vibes.

<b>What technology is used? (Analog, digital, tube ...)</b>
This is the Line6, 100% digital.

<b>Are they edited? Via an editor for Mac / PC?</b>
Editable: yes! Effects by 5 parameters, 4 programmable memories beaches.

<b>What is the connection? (Audio / MIDI)</b>
Stereo input and output. Supply via a transformer line 6 barrel.

<b>Is it a rack or rack-mount model?</b>

In short, a multi mas wrong if we place ourselves at the time when the pedal is released. Today, it makes me seem completely overwhelmed as material.


<b>The general configuration is simple?</b>
Yes. Connection of input, output, we select the desired effect and it's over.
For settings, cf. below.

<b>Editing sounds and effects is easy?</b>
Yes and no.
In itself, nothing fancy. Potentiometers Speed ​​(Speed), Depth (depth), Mix is ​​very classic. on the other hand, potentiometers "Tweak" and "Tweet" have a feature-specific effects ... Difficult to identify their use immediately, a passage in the manual is desirable.
Otherwise, I find that the settings are not very progressive.
In terms of saving a beach is simple: you press a few seconds on the corresponding switch, the LED flashes and you're done. However, impossible to know what settings are used!
The mix knob is seen as too often absent.

<b>The manual is clear and sufficient? ...</b>
Yes, as always with Line 6, everything is clear and the tone is quite nice!

Result: Same as above: it was 10 years ago, but today it is completely outdated as it works!


<b>The effects are they effective, responsive and realistic enough?</b>
I did not find my account but we see this pedal on many pedalboards, pro or not pro, so I guess some find their account.
As always with Line 6, I found the sounds not bad, making illusions but sorely lacking the warmth of the original. On the chorus, flanger, it's really not that. The vibes and tremolos are not too bad.

<b>Which instruments do you use?</b>
LTD MH400 NT, plugged into a preamp AMT SS 20, EXH 44 Magnum Orange cabinet.
The rendering is better when MM4 is plugged into the effects loop.

<b>Which ones do you prefer, you hate?</b>
The ones I prefer: the vibes, the ring mod
The ones I do not like: the chorus / flanges

Conclusion: This is the Line 6. One likes or dislikes. Without going into the squabble digital / analog I really not hooked to the sounds provided by the MM4 but it is true that as a backup solution or to explore the modulations that's fine.


<b>How long you use it?</b> 7
I got it for a few months.

<b>What is so special that you love the most, least?</b>
Most: the concept of multi-modulation effects dedicated, managing stereo mix of the potentiometer
Minimum: the operation really exceeded, full of effects available but only four available tracks.

<b>Did you tried many other models before buying it?</b>
Yes, I am looking for a dedicated multi modulation.
I had a TC Electronic NM-1, and a Line 6 M9.
Sound level: the MM4 is between the two, it is better than NM1 and only marginally worse than the M9.

<b>How would you rate the quality / price?</b>
In new: it is theft. For € 250, there are ways to get a setup that will sound better with dedicated pedals.

<b>With experience, you do again this choice?</b>
Yes, because I was really curious to try it but I do not regret having sold.

Good thought falls short.

By Fireguy8402, 23/12/2011
The MM-4 by Line 6 is actually a modeler of several different famous modulation pedals of the past, along with a few modern ideas thrown in. The pedal features models of 16 different modulation effects. The pedal has four footswitches for four presets which can have values changed in real-time via an outboard expression pedal. Stereo ins and outs are provided for a full stereo sound when using multiple amps. This particular model is a floor based unit, however Line 6 did come out with a rackmounted version. The MM4 can be powered by battery but is best powered by an external power supply.


Hooking up the pedal is fairly simple. There are stereo inputs and outputs so if you’re using it in mono with one guitar and amp be sure to plug into the mono input and output. Editing the sounds can be a little tricky on the MM4 without the use of the manual, however Line 6 includes two stickers for the pedal to help you along. The pedal has your basic modulation knobs (Speed, Depth, and Mix) but also includes a Tweek and a Tweez knob that change different parameters depending on what pedal you are modeling. It’s nice that the pedal is tweakable, but this can get confusing if you don’t use the pedal often, so keep those stickers. Overall, the pedal is pretty well laid out and easy to use. Basically you just tweak the knobs until you find a sound you like, hold down on a preset button for a few seconds until the LED blinks and you’ve stored your sound to that footswitch. Basic usage is simple, but to get into all of what this pedal can do it is best to read the manual.


I am not overly impressed with this pedal the way I am with the DL-4. It is a good idea and I love the layout and functions but I feel this pedal falls short in the sound department. There are a couple choruses and a phaser that sound decent, but the other models sound very processed and digital, in a bad way. The tremolo and rotary sounds are especially disappointing. If you are looking for a warm analog sounding modulation you would better off looking elsewhere. Line 6 was able to get some great analog sounding delays packed into the DL-4 but, there is just something very digital sounding about this pedal which can be useful for some applications. There is also a significant drop in the volume when I use this in the loop of different amps.


Overall I think Line 6 had a good thing going with this pedal but fell short. I like the idea of the layout and I love my DL-4 but there is just something lacking in the sound and it is very digital and unnatural. Some people may like that and find it usable. There is also a definite drop in volume when engaged in my rig, although there are aftermarket modifications to remedy this. I feel this pedal is too large to keep on my board for the few good sounds it produces and that my money would have been better spent on a few separate pedals instead of an all in one unit. Great idea, bad execution.

Another 4-stomp winner from Line 6.

By heads on fire, 02/11/2011
Available Models:
• Opto Tremolo
• Bias Tremolo
• Phaser
• Dual Phaser
• Panned Phaser
• U-Vibe
• Rotary Drum
• Rotary Drum & Horn
Analog Flanger
• Jet Flanger
• Analog Chorus
• Dimension
• Tri Chorus
• Pitch Vibrato
• Ring Modulator
• Panner

MM4 Specifications
Digital Effects 16
Factory Presets 20
User Programmable Channels 4
Controls Effect Selector, Speed, Depth, Tweak, Tweez, Mix
Additional Controls EX-1 Expression Pedal (optional)
Mono/ Stereo Stereo in/ Stereo out
Chassis Color Blue
Dimensions Length: 10-inches/25.4 cm; Width/Depth: 6-inches/15.24 cm; Height: 2.375-inches; Weight: 3.1 lbs


This pedal is a dream modulation pedal. It gets a ton of great sounds, can save presets and recall them easily, and has a lot of tweakability. Stereo ins and outs help a ton with routing options. The manual is very clear in detailing the operation of the unit, so no worries about getting into a stompbox that's too deep to swim with. For an added bonus of fun, use an expression pedal with the MM4!


This unit sounds great. I'm only giving it a 9 because I've heard some mods done on them that sound better than stock from the factory. So the pedal CAN potentially sound better, but it's really great to begin with. My favorite setting is based on the Flying Pan from Ibanez - it can pan between two amps, and with an expression pedal, the speed of the panning can be changed from slow to fast - it resembles a good Leslie effect, and sounds absolutely killer. The other rotary effects are great, and the Univibe is not bad. The choruses are rich and lush! Stereo is not required here, but again, it makes the sounds so much more full.


The MM4 is one of the best modulation effects yet released in the music world. It can do a lot of great sounds, and the ease of use is second to none. Being able to program 4 patches and recall them at any time definitely helps make this legendary pedal a big winner. Highly recommended.

The MM4 is Mmm Mmm Good!

By Everlone, 21/06/2011
The Line 6 MM4 is a modulation modeler that digitally simulates 16 classic modulation effects including choruses, phasers, tremolos, rotary speaker/Leslie, flanger, and others. These can all be edited with the on-board controls and saved to one of four memory banks. Both the inputs and outputs are stereo (plug into the Left side for mono). This pedal is not rack mountable (unless it is put in a drawer), but Line 6 made this unit in a rack effect.


Editing and saving the effects could not be any easier. Select the bank you want to save the effect to, select the effect, dial in the settings for the effect, then press and hold the bank button where you want to recall the effect until in blinks and you are done. The manual for this pedal is excellent. It gives a little history on the modulation pedal or effect the MM4 is replicating, and gives example settings and a description of how the controls work for each effect.


I have only ever used this pedal with my electric guitars. The effects I use the most on the MM4 are the Tri-Chorus, Phase 90, Leslie, and rotary speaker. This pedal works best in front of the amp and before distortion pedals. When I have used this pedal in the effects loop the guitar tone sounds overly processed.


The best thing about the MM4 is the convenience of having 16 different effects in one easy to use to pedal. The most unfortunate thing about the MM4 is that you can only use one effect at a time. It would be nice to have the option to use a chorus and a phaser simultaneously, but in no way do I believe this is a deal breaker for the pedal. The MM4 is a more than adequate substitute for many of the effects it models. Even if you use only 4 of the 16 effects, the pedal is a better bargain than buying 4 individual pedals to produce those same effects. Are the MM4 effects IDENTICAL to the original effects they are replicating? No, but they are VERY good imitations.
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Line 6 MM4 tech. sheet

  • Manufacturer:Line 6
  • Model:MM4
  • Series:Stompboxes Modeler
  • Category:Multi-Effects for Electric Guitar
  • Added in our database on: 08/02/2004

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Other names: mm 4