
MXR Micro Amp M133 Guitar Effect Pedal
For more than 20 years, the MXR Micro Amp has been a staple among the world’s top artists because of its ability to boost and sweeten up your guitar or bass tone and drive the front of your amp. The Micro Amp+ builds on that classic pedal with EQ controls and other upgrades that take this powerful boost box to the next level. With its Gain knob, the Micro Amp+ allows you to dial up just as much gain as the original—up to +26dB—but with added EQ controls, you can now finely sculpt your boosted signal. For the classic Micro Amp sound, set the Bass and Treble controls to noon. Additionally, the Micro Amp+ now comes equipped with low-noise op amps—so you don’t get any extra noise at super high levels—and true bypass switching. With the sturdy housing and durable components that MXR is known for, this pedal is ready for the road.
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MXR Micro Amp M133 Guitar Effect Pedal
Purchase Information
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Refund/returning items
We do not accept order changes after the confirmation and payment of your order. After your product is delivered, Refunds are only possible if it is caused by our error (damaged/defective product, or incorrect item, etc.). To help us ascertain if your refund request is possible, please provide us with specific reasons for your refund request (reasons supported with photos where possible) via email to: enquiry@davisguitar.com – Please include your address too.
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Shipping partners
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- FedEx Priority (International Orders)
Delivery typically in 1 to 3 business days to select markets in Asia, 3 to 5 business days to United States, Canada and Europe.
Taxes & Duties
The payment of duties and taxes are typically the responsibility of the receiver (International Deliveries).
Overseas shipping time and cost
Overseas shipping cost varies by buyer location and the item’s size and weight. Kindly contact enquiry@davisguitar.com for a shipping quote prior making a purchase.

