American Musical Supply
American Musical Supply
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MXR M133 Micro Amp Boost Pedal

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Product Description

The MXR M133 adds a preset amount of gain, using a single control. With a guitar, this lets you boost your signal for lead work, adjust between two different guitars with unmatched output (i.e., humbucker to single coils), or it can supply a permanent boost in a long effects chain where signal drop off is a problem. Powered by a single 9 volt battery or Dunlop's ECB-003 AC adapter.

Footswitch toggles amp on/bypass (red LED indicates on) Gain knob adjusts total output volume when micro amp is engaged.

Product Specifications


  • Dimensions: 4-3/8" x 2-3/8" x 1-1/4"
  • Weight: 0.9 lbs.
  • Color: White

Helpful Info about the Manufacturer
Phone:  707-745-2722 Warranty: 
Don from The Dakota Territory, USA
Overall Rating
Hey... someone give me a boost!
Your general opinion of this product.
Nice clean boost for a good price.
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MSRP: $114.28
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