Boss ML-2 Metal Core
Boss ML-2 Metal Core

ML-2 Metal Core, Distortion from Boss.

All user reviews for the Boss ML-2 Metal Core

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Average Score:4.4( 4.4/5 based on 30 reviews )
 15 reviews50 %
 11 reviews37 %
 2 reviews7 %
 1 user review3 %
Audience: Anyone Value For Money : Excellent
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iamqman's review"Not great but better than HM"

Boss ML-2 Metal Core
This pedal doesn't suck. I wouldn't say it is terrible but it is still a very lousy Metal distortion pedal. There are several pedal out there that do a decent metal tone for a pedal but this really isn't one of them. I do have to say that pedal is leaps and bounds over the Boss Heavy Metal pedal that was their first attempt and metal.
ML-2: Metal Core
Extreme Metal in a Compact Pedal

With its extreme gain, the ML-2 is the most potent and heavy distortion pedal ever created by BOSS. It easily delivers massive distortion and gain with heavy lows for playing Nu Metal, Grind Core, Industrial, Hard Core, or any genre that requires crushing sound. The ML-2’s ferocious and biting tone will complement and cut through any blast beats your rhythm section can create.

* Ultra-heavy distortion with sharp-edged attack for crushing metal riffs
* LOW control for heavy, low frequency sound a la 7-string guitar or dropped tuning
* HIGH control for screaming, metallic tone
* Road-tough BOSS metal construction

Extreme Metal in a Compact Pedal

Nominal Input Level
-20 dBu
Input Impedance
1 M ohm
Nominal Output Level
-20 dBu
Output Impedance
1 k ohm
Recommended Load Impedance
10 k ohms or greater
Pedal switch, LEVEL knob, LOW knob, HIGH knob, DIST knob
CHECK indicator (Serves also as battery check indicator)
INPUT jack, OUTPUT jack, AC adaptor jack (DC 9 V)
Power Supply
DC 9 V, Dry battery 6F22 (9 V) type (carbon), Dry battery 6LR61 (9 V) type (alkaline), AC Adaptor (PSA series: optional)
Current Draw
36 mA (DC 9 V)
Expected battery life under continuous use
Carbon: 3 hours, Alkaline: 10 hours * These figures will vary depending on the actual conditions of use.
Owner's Manual, Leaflet (USING THE UNIT SAFELY, IMPORTANT NOTES, and Information), Dry Battery 006P/9V (6LR61)
AC Adaptor (PSA series)


Pretty easy pedal to master. It has four control knobs that interact withing the tonal range. The Level knob is going to control your volume output, the Low knob is going to control your low EQ frequencies, the High is going to control the high EQ frequencies, and the Dist knob is going to control the gain/distortion for the unit. The EQ knobs are a bit different than the Metal Zone in that they are more Mids focused I feel.

I am more pleased with the tonal dynamics of this pedal tremendously more than the Heavy Metal pedal they did years ago. This one isn't as thin or metallic sounding as the Heavy Metal but still sounds brittle overall which is hard to get away from with most Boss pedals.


Try to keep the Dist knob down or around the 12:00 position because there is a ton of gain on tap and the more you increase it the more is becomes muddy and messy. As a general rule with this pedal, keep all control knobs around the noon position. Everything else seems to go too far in one direction or another.

Try this pedal with a Les Paul and a Marshall JCM 800 and it will get a good boost in a clean type setting. The EQ boosting capabilities especially in the midrange part is great.


This is a pretty inexpensive pedal that will get you a decent starter metal tone. Your not going to get this pedal on any professional stage. This is for someone looking to get into the guitar and needs a cheap metal tone. For new they come in at around $90. Not going to break the bank but not going to be your final destination. If you can afford it and don't want to buy a metal amp then try out a Zvex Metal pedal. That pedal is pretty nice.

moosers's review

Boss ML-2 Metal Core
The Boss ML-2 Metal Core is a distortion pedal aimed for use with metal and heavy rock genres.  This is an analog unit that has both a standard 1/4 inch input and output and like all Boss pedals of this size is powered by either a nine volt power supply or battery.  This isn't a rack mountable unit as it is a foot pedal.


Using the Boss ML-2 Metal Core isn't hard at all as it only has some basic parameters.  This is the newer version of some of the older Metal related Boss pedals, so it has a very similar make up.  If you have used any type of distortion pedal I think you'll be able to understand how to use this pedal without any problems.  The pedal simply has four parameters - level, low, high, and distortion.  These are always the basic parameters found on overdrive and distortion pedals, so unless you are an absolute beginner I don't think you will need to study this one too hard or even look at a manual.


The sound quality of the Boss ML-2 Metal Core is sub par in my opinion.  While it does have a decent metal distortion, there is really only one sound that you can get with it.  Keep in mind that I'm not a huge fan of metal to begin with but tried out this pedal to see what types of tones I could get with it.  I've used the pedal with a Gibson SG and a '76 Fender Twin Reverb, so I think I'm getting a pretty accurate sound from this pedal.  If you are into metal and are looking to get a thick distortion sound for playing this type of music, I wouldn't pass this pedal by, but I can't say that I would recommend this pedal to anyone else based on the sound of it.


While this pedal is reasonably priced, the fact that I can really only get a single tone from the Boss ML-2 Metal Core makes it quite unappealing for me.  If you are trying to get a big metal sound, this pedal might do the trick for you but I would strongly encourage those interested to look into a variety of distortion pedals as there are a lot of them out there to choose from...

fifou666's review"Ml2"

Boss ML-2 Metal Core
Avec son gain extrême, la ML-2 est la pédale de distorsion la plus puissante que BOSS ait jamais osé produire. Elle délivre une distorsion et un gain aux graves très graves, parfaits pour Nu Metal, Grind Core, Industrial, Hard Core ou tout autre genre particulièrement «heavy». Google description ML - 2

Madmick06's review (This content has been automatically translated from French)" Good Pedal .. no more!"

Boss ML-2 Metal Core
Pedal accurate enough losqu'on wants to find her ..


Fairly simple config ..


Sound pretty good .. many large distortion .. if you are a fan of Death core .. you will be served .. otherwise to be avoided .. I for one have a heavier traditional style .. I think that what it lacks something in the pedal ..


I use this pedal for 7 years .. quality / price its good .. but its not like pedal broke everything seriously .. I not really recommend .. moin has to play death core .. yet its not what I think of better now!

GutsMiura's review (This content has been automatically translated from French)" best pedal ever"

Boss ML-2 Metal Core
large distortion jenpakonten
SETTINGS acute low medium level and gain
for rack euuuuh NO IDEA ... I know nothing Rack x)
analog pedal


to learn to adjust we must first learn to know the
for indeed what she called "metalcore" but it is nevertheless very versatile so you know without going to do a cover of as i lay dying and what up with the sounds of nirvana
manual I admit to not having read


As stated above this pedal is just monstrous once taken in hand éffectuer can do almost everything with
of a large distortion overdrive bluesy crunch to even see this metalcore revealed this to be a gold mine of sounds
well understood that I prefer is finally clear and powerful sound is clearly made for big heavy Bourrain first place but tampering is getting a very powerful clear sound
I play mainly with concert and repeated with a les paul marshall stack on mg100fx


I tried this pedal for the first time as there is little pressure one years through my brother who buy as I test and it was on the stroke of foudreje am someone pretty impulsive and I'm 100milles test equipment if I can not find the material that makes me have the thunderbolt from the beginning (not that small parenthesis to take me for a chick who just tested its first pedal x) )
I absolutely love everything about this pedal is extremely versatile malgres his name "metalcore" to tell you that I played with in my punk rock
I would do this choice without ésiter
Le Mercier04/15/2012

Le Mercier's review (This content has been automatically translated from French)" Terrible!"

Boss ML-2 Metal Core
Analog pedal exclusively for pure metalheads .... whatever ....

a jack, a farce jack, a volume, a knob for adjusting the bass, a knob for treble and a knob for the distortion level.
It can jump in with both feet without problem, it's tough like all the Boss ...


One branch and it works .... (Of course, must be activated .... tsss)

The adjustments are very precise and effective damn!!


Well, finally the heart of the test ....
To be clear, we must know what it is connected: A VOX AC30CC1 modified with a baffle 12 Jensen Jet "Blackbird Alnico ....
Pedal connected to the channel "normal" and the volume control stage preamp set to 13h ...
Tested with an Ibanez JS 1000 ...
Amateur Ballroom muzet, go your way here because we speak the pure metal and other trash .... The sound is purely demonic, strapped with acute but not garish at all (can be linked with the lamps of Vox, I do not guarantee the same result on a combo analog) The bass is overpowering and settings also terribly effective, the his remains accurate if you do not push too low (otherwise it is the membrane that falls .... HP) nival the saturation is very high (note the feedback when the distortion is at bottom.), for my I share the rule around 14h and 11h of the volume goshawks because remember that saturate the lamps too, with this setting, all I can do in terms of big big modern sound (Even the Kerry King ...)
Big surprise, the total absence of parasites and other bzzzzzz or vrrrrrrr and no noise gate of course. (I read the other testers and I realize that many complain about noise, I think their systems and connectors are responsible for this result because for me it is the total silence with the settings mentioned above , also noted in that I use for Monster cables, specifically the jazz and I also use an MXR DC Brick for power ...)
Another big surprise, the pedal responded in ways surprising volume knob of the guitar, you'd think of germanium?? The knob has small volume, we obtain an almost clear foil, very melodic and surprising, I love anyway


It's been two years already ... and still in love ... obtained for a ridiculous price, I bought it just to see what it was and eventually fell in love and I use it almost every day, it's really a great pedal and I did that a regret, not having discovered earlier, of course, some might say that the range of sound is not great, Ok, but what is written above "METAL CORE" must be an idiot to want to make sounds with Jazz .. .! When I try a different type of sound, I use another low pedal ... pfffff
Another strong point is its price is really affordable, so metal fan, go for it ......
Unless you want to also play with the Jazz ... Hmm ..

Before_'s review (This content has been automatically translated from French)

Boss ML-2 Metal Core
Disto digital boss


Just tweak the knobs to find something we like.
The manual suggests some adjustments.


Be careful, once you push the distortion, ca sends direct timber.
However, after a year of use, I tell myself that nothing beats the distortion of the amp (coupled with an overdrive for example).
Edit the pedals for a particular type of zik, glucose is a bit I think. I use it with an Aerodyne Telecaster, Engl Screamer on.
Of breath, rather vague, despite the tone controls.


I use it for a year now, I tested other distortion (whose sister DS2), the sound is rather cold and it still bothers me, once I return to the duo SD1/DS2 suits me more (or distortion of the amp).
So may be that with active pickups it sounds better, at least personal, with hindsight, I can do without this pedal.
A pedal correct, but not essential.

JxB's review (This content has been automatically translated from French)" Practice for preprod metalcore"

Boss ML-2 Metal Core
It's a distortion pedal, we saw the name is in fact more closely related in sound to all kind of metal that end with a core.

The technology is analog.

The edition is the simplest, it is no worse: no brainer.

The connection is simple:
- Jack Audio In / Out Jack
- Power supply: battery or mains (adapter 9V)

The model is in the form of pedal.


Very simple configuration, no need for manual, there is the sound that matches the type very quickly.

Manuel not even open to the views of the simplicity of the beast.


For the metalcore / deathcore / grindcore, you have a pedal that will delight you, the sound is really well suited to this kind of style I think. If you are looking for something else, I think you'll be disappointed, it's a distortion that is not very versatile, but it's not what I wanted.


I use it for a year now, finally, in great part, because I'm not a guitarist, but I had the opportunity to buy this pedal at a very low price, I jumped on it, and the advantage is that I can always have something to plug my scratch when they have problems with their stuff.

I have not personally tested other things, except in software, and there it is above.

I use this pedal to make preprod, let me explain: I passed the guitar to the pedal, then I plug the pedal directly to the line input of the soundcard.

In case there is the sound is very raw and quite unpleasant to listen, to get, I go into my recording software / mixer (DAW) for a plug-in HP simulation of guitar amplifier.

I tested a lot of guitar amp modeling, but none sounds as good as this pedal (no idea why not make it), by against the combination pedal ML2 + HP guitar is the ultimate simulation, I sound phew preprod for all guitarists I recorded in 2 2 were on the ass.

In short, to save plug and play solution is ideal for the metalcore.

When I want to record over itself again, I leave my microphones and amplifiers for guitarists, but it takes a lot of time in installing, positioning, and a lot of headaches.

While there, it's just too easy!

Yes, I would do if I have choices to make preprod for my group or a big need, for now I still think that this pedal I will have some time!
roll mops08/05/2011

roll mops's review (This content has been automatically translated from French)" a try"

Boss ML-2 Metal Core
the typical Boss, no adjustment of the medium, but simple and robust as usual


Use simple, manual dispensable for trying, there are combinations that sound soon ... and those that are best avoided!


then, my opinion will be mixed.
I first plugged in my VOX lil'train and there ... how to say ... bin for a high gain pedal, CA does not send the very heavy. the amp is rather vintage and association with this pedal does not suit him at all. is flat and without any real interest.
So, I try in my Blackstar HT5, and, BIM, full ears.
taking care not to push above the gain at 3 / 4 (otherwise, it gets mashed!) was distortion pedal for playing modern metal to the System, Slipknot, and even more ... grrr ca, ca tweet, it sounds serious!
and exactly, speaking of serious, this pedal seems s'acomoder low tunings. I tried E, drop D, drop C, drop B, anything goes (within the limits of the amp)
It took place in my pedalboard next to my Metal zone (much heavier) by offering me a range of sounds that I was not with the metalzone or distortion of the amp. I note, therefore, correctly assuming that the pedal is intended for fans of modern sounds


I've had 3 months. Its a modern, especially the lack of adjustable limit the medium option, which accommodates many a modern amp.
To avoid unpleasant surprises, try it with your hardware.
value for money too much because it is not worth the € 109 OCCAZ but there are ways to find a bargain.
Mr Coyote9121006/23/2011

Mr Coyote91210's review (This content has been automatically translated from French)" I agree!"

Boss ML-2 Metal Core
A great pedal with the big sound as I hear listening to Motorhead!


Really to find his sound, do not look any further than the buttons, you set a few minutes and found happiness. The manual is very detailed but somewhat superfluous since the pedal is very easy to adjust.


Distortion fired up! It's like a metal concert. With my Ibanez and my Marshall, all equipped with this gem, I'm having a play Motörhead, Metallica, Pantera and many more!


For six months, I tested several other pedals before you get close to if cels.
The pros: The ease of adjustment, lightness.
The -: Its fragility: /
I bought it for € 100 and I have no regrets except that I was broken when the advice ... NEVER let your cat sleep on his foot!

Musically, Alexandre