MXR Micro Amp M133

Pedal Preamp

Image MXR Micro Amp M133

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Latest User Reviews

2 years ago

Straightforward

It does exactly what you want it to do. Really good

2 years ago

Great Pedal

It's a very versatile pedal, fits for every tone, clean, boost. VFM <3

2 years ago

Very good for what it does

Obviously it’s not the most versatile pedal on its surface but it works well. The on off feels nice to use and the sound retains good quality at larger gains

2 years ago

Exactly what you would expect

It is a really great pedal, my other guitarist and myself got this one and it is really good. Robust, but not heavy, expected quality from MXR just as any other MXR pedal. Does it job if you want some more sound and pushing your solos a bit more, or if you have two guitars with different inputs volumes.

2 years ago

Best boost for clean tones

For the price, this is quite a decent pedal for that frusciante-ish crunchy clean tone, works very well

6 years ago

MORE gain

Well, doesn't get more simple than one knob. Can add quite a lot of gain to the signal, actually. I use it either as a lead boost or to compensate for weaker signal. My favourite use is after fuzz/drive, at about 11 o'clock, with the guitar volume knob rolled half way down. Signal is nice and strong, and for a lead tone just roll the guitar knob up, no monkey business. This not a transparent boost, though, so if you are looking for this, better try something else. Rolls out some of the highs. My personal preference - I like it. Build quality is MXR - this will take up kicking around no problem. Knob is large and with the Dunlop rubber tyre it makes it very easy to adjust with your feet while playing. Now this is a lot of text for one knob. Very cool.

7 years ago

Does the job

I put this on my pedal board as a booste when playing solos and it does this perfectly. I have it set at about 10 o clock and that is all you need. This pedal can go very loud.

7 years ago

wow

wow the amp M 133 is fantastic!!!!!! no wrds for it....

7 years ago

Simple but powerful

Adding muscle to solos and leads

11 years ago

Just boost!

I have a lot of overdrives on my board due to playing in covers band and the need for multiple different sounds. With a new project just started which sits on the heavier side of rock I realised a need for a final clean boost.

I got my first micro amp second hand recently and was so impressed that I've just bought this new one. I was so shocked at how neutral the boost was that I immediatly realised I needed one at the start of my chain as well as at the end.

I can now use single coils and humbucker equipped guitars in the same set and just use the micro amp at the start of my chain to level up the single coils without affecting the tone in any way. And with the one at the end it doesn't matter how many overdrives are on I still get a boost in volume without any added gain. Awesome!

I've got a Mooer pure boost in the middle of my board which does give a very clean boost but it has a slightly clinical sound when on which the micro amps don't.

All in, if you want a boost in volume or a single coil level adjustment both without any tone coloration buy one of these now! Or two like I did!

Read all reviews >>

Technical Data

  • Manufactured by MXR
  • Released in 2004
  • Average price : $128
  • Adjustable boost
  • Perfect for switching between guitars with unmatched output
  • Great for use with long signal chains, or anytime signal drop-off is a problem
  • Knob for gain, status LED
  • Hardwire bypass
  • Sturdy metal housing
  • Made in USA
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