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MXR M133 Micro Amp

Listing photo · Reidys

Other / Modern / year unspecified

MXR M133 Micro Amp

£55

Seller's listed price. Shipping, import charges and taxes may apply.

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Last observed 28 Oct 2026. Confirm current availability with the seller.

Brand in listing
Other
Category
Effects unit
Condition
Used
Source country
GB
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From the listing

Seller's description

This second hand guitar pedal is in very good condition. Some small chips on the finish, and velcro on the underside, The MXR M133 Micro Amp is a classic guitar effects pedal designed to give your signal an extra boost without the complexity of a conventional overdrive or distortion pedal. Known for its simplicity, reliability and versatility, it has become a popular choice among guitarists looking to increase their volume for solos, add extra drive to an amplifier or maintain a strong signal throughout a complex effects chain. Its compact design and straightforward operation make it an excellent addition to almost any pedalboard. At the heart of the Micro Amp is its ability to deliver up to 26dB of additional gain, providing a substantial increase in signal level when required. Unlike many overdrive pedals, its primary purpose is to boost your existing sound rather than introduce a completely different tonal character. This makes it particularly useful for bringing solos forward in a live mix, helping lead guitar parts stand out without losing the character of your guitar and amplifier. When used with a valve amplifier, the increased signal can also push the amp harder, producing additional natural saturation and sustain. The pedal features an uncomplicated control layout with a single Gain knob, allowing you to adjust the amount of boost to suit your playing style. Lower settings provide a subtle increase in volume, while higher settings deliver a much more pronounced boost for powerful lead passages and heavier tones. This simplicity makes it easy to operate during performances, with no complicated menus or multiple controls to navigate. The Micro Amp can also be useful when switching between guitars with different output levels, helping balance the volume of instruments fitted with different pickup configurations. Another useful application is compensating for signal loss in longer effects chains. Guitarists using several pedals, particularly in more elabora

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