

🎸 Boost your tone, not your hassle — the Micro Amp that pros swear by!
The Jim Dunlop M133 MXR Micro Amp Pedal is a compact, battery-powered analog boost pedal designed to add a preset gain to your guitar signal with a single control knob. Featuring a footswitch with a red LED indicator for easy on/off toggling, it’s perfect for balancing output between different guitars or adding a clean boost in long effect chains. Made in the USA, this pedal preserves your original tone while enhancing clarity and sustain, making it a favorite among professional musicians.





| ASIN | B0006ZXFZQ |
| Batteries | 1 9V batteries required. |
| Best Sellers Rank | 34,561 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 144 in Guitar Distortion & Overdrive Effects |
| Body Material | Plastic, Metal |
| Colour | White |
| Connector | 1/4 inch (6.35mm) audio jack |
| Country Produced In | USA |
| Customer Reviews | 4.5 4.5 out of 5 stars (358) |
| Date First Available | 27 Jun. 2008 |
| Hardware Interface | 1/4-inch Audio |
| Item Weight | 363 g |
| Item model number | M133 |
| Material Type | Plastic |
| Power Source | Battery Powered |
| Product Dimensions | 14.99 x 11.68 x 6.86 cm; 362.87 g |
| Signal Format | Analog |
| Size | 0 |
| Voltage | 9 Volts |
R**N
MXR
This is an excellent pedal and great for boosting signal for riffs
M**T
Best clean boost pedal on the market
You really can't go wrong with this pedal, at the end of the day John Frusciante uses it and you can't really say much more than that. Simply put, it adds more 'meat' to your base tone, chords ring clearer and single notes sing longer and louder. Doesn't change your tone in any way per se, just somehow 'improves' it almost imperceptibly. It's a fairly subtle effect for the price admittedly, but in my opinion entirely worth it!
J**.
An effect which gets straight to the point!
MXR don’t disappoint, this is another well built, no nonsense piece of kit. It boosts your signal just as it should, with no added noise . It’s small, powerful and simple to operate, they’ve been around a long time, there’s a reason for that!
R**N
Epic clean boost switch
Fantastic piece of kit... used in effect loop it gives enormous amounts of boost with negligible colouring of sound.
J**E
Preamp or no preamp
This effect seems to be quite subtle at first but I can imagine after prolonged use it becomes indispensable...
P**L
Classic pedal, great boost
Used this into my Marshall dsl20cr to push the tubes a bit without more volume. Does the job well
A**Y
Great pedal, nearly always use this
Great pedal, nearly always use this, provides a nice boost and does not lose any clarity to the sound (if anything, makes it clearer).
C**Y
Class pedal
Makes a substantial difference and you can get some very dirty, fuzz sounds from this pedal
M**H
I accidentally bought the wrong one but this turned out to be fantastic.
C**E
MXR é pedal pra toda vida. Esse boost é um clássico!
F**O
Suena super padre ahora solo tengo que aprender a tocar guitarra
A**X
もうワンランク上を買えば良買ったのかもしれないが、有ってもなくてもよいエフェクターかな
M**X
L'ho posizionato alla fine della catena effetti per aumentare il volume durante i soli. Non altera il suono e per me è un pedale indispensabile. Consigliatissimo.
Trustpilot
4 days ago
2 weeks ago