






🎸 Boost Your Signal, Not Your Noise!
The Jim Dunlop M133 MXR Micro Amp Pedal is a compact, analog preamp pedal designed to deliver a clean, preset gain boost with a single knob. Featuring a footswitch with a red LED indicator, it allows seamless toggling of the effect on and off. Ideal for balancing output levels when switching guitars, this pedal is built with precision in Benicia, California, and operates quietly at 9 volts with minimal current draw.





| ASIN | B0006ZXFZQ |
| Amperage | 9 Milliamps |
| Audio Output Effects | Preamp |
| Best Sellers Rank | 33,120 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 133 in Guitar Distortion & Overdrive Effects |
| Brand | MXR |
| Brand Name | MXR |
| Colour | White |
| Connector Type | 1/4 inch (6.35mm) audio jack |
| Controls Type | Knob |
| Customer Reviews | 4.6 out of 5 stars 361 Reviews |
| Global Trade Identification Number | 00710137006607 |
| Hardware Interface | 1/4-inch Audio |
| Included Components | Dunlop ECB003 Power Adapter, 1 x 9V Battery |
| Item Dimensions | 15 x 11.7 x 6.9 centimetres |
| Item Dimensions L x W x H | 27.8L x 12.4W x 8.8H centimetres |
| Item Type Name | EQ Effects Pedal |
| Item Weight | 363 g |
| Item weight | 363 g |
| Manufacturer | Jim Dunlop |
| Manufacturer Part Number | 11133000001 |
| Model Name | 11133000001 |
| Model Number | M133 |
| Power Source | Battery Powered |
| Product dimensions | 27.8L x 12.4W x 8.8H centimetres |
| Signal Format | Analog |
| Style | Compact |
| UPC | 962327363988 653078141993 710137006607 704660988240 |
| Voltage | 9 Volts |
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
MXR
This is an excellent pedal and great for boosting signal for riffs
S**C
Classic tone
An absolute classic, gives you a natural amp break up sound, without muddying your tone. You can control how much break up you want in you sound. Love it.
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
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!
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).
Trustpilot
2 weeks ago
1 month ago