MXR M233 Micro Amp +

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$129.99 to $149.99 Price Tier: Standard

4.5 (5)

1 Review

Find out who is using MXR M233 Micro Amp +

2 community setups

0 wishlisted

14 saved

Page last updated Jun 06, 2026

Pricing and availability

We compare 600+ stores and found this item at 4 stores. Prices updated June 6, 2026.

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Price

4.5 (14)

$149.99

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4.2 (41)

$149.99

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5.0 (15)

$129.99 41 available New

$86.00 12 available Used

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4.8 (19)

$149.00 $148.00 $1.00 · All time low

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Average Price: $133

Standard/Professional

$60

$151+

Price Tier

In the Boost Effects Pedals category, MXR M233 Micro Amp + is priced in the upper end of the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

Budget

Standard

High-end

Price History

Based on price data from 3 merchants for "MXR M233 Micro Amp +". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

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Unlock the full potential of your guitar's tone with the MXR M233 Micro Amp +. Designed for musicians who crave precision and power, this booster pedal delivers up to 26dB of clean gain, allowing your sound to cut through any mix with ease. The Micro Amp + doesn't just amplify; it shapes. With a two-band EQ, you can meticulously craft your sound, whether you're enhancing your solos or leveling out your rhythm sections.

What sets this pedal apart is its robust build and intuitive design, ensuring it withstands the rigors of both stage and studio. Born from MXR's renowned Custom Shop lineage, the M233 is a testament to the brand's commitment to quality and innovation. Its compact size makes it a perfect fit for any pedalboard, while its straightforward controls ensure you spend more time playing and less time tweaking.

Ideal for guitarists seeking a reliable and versatile boost, the MXR Micro Amp + is your key to unlocking a universe of tonal possibilities. Whether you're looking to add warmth, clarity, or punch, this pedal delivers with precision and flair.

Key Features:

Up to 26dB of clean gain boost
Two-band EQ for versatile tone shaping
Compact, durable design perfect for any pedalboard
Built for longevity, suitable for live and studio use
Part of MXR's esteemed Custom Shop series

Product specs

Brand	MXR
Model	CSP233 Micro Amp +
Finish	Cream
Year	2010 - 2025
Made In	United States
Categories	Overdrive and Boost Pedals
Pedal Format	Standard

FAQs

What type of power supply does the MXR M233 Micro Amp + require?: The MXR M233 Micro Amp + requires a 9V DC power supply, which is standard for most pedalboards. It can also be powered by a 9V battery for convenience.
Can the MXR M233 Micro Amp + be used with both single-coil and humbucker pickups?: Yes, the MXR M233 Micro Amp + is designed to work well with both single-coil and humbucker pickups, providing a clean boost to compensate for output differences between the two.
How does the MXR M233 Micro Amp + enhance a guitar signal?: The MXR M233 Micro Amp + adds a preset amount of gain to your signal, enhancing volume without altering your guitar's natural tone. It's ideal for solos or balancing different guitar outputs.
Is the MXR M233 Micro Amp + suitable for use in a long effects chain?: Yes, the MXR M233 Micro Amp + is perfect for use in a long effects chain, as it can provide a clean boost to counteract signal drop-off.
Does the MXR M233 Micro Amp + color the guitar's tone?: The MXR M233 Micro Amp + is designed to provide a transparent boost, meaning it enhances volume without coloring or altering your guitar's original tone.

Videos

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Living Room GD

MXR Micro Amp + (demo)

Living Room GD

MXR Micro Amp + BOOST YOUR AMP

The Pedal Picassos

Reviews

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PROS

Crystal clear boost doesn't alter original tone
Bass and treble controls enhance without muddying
Ideal for lead boosts or subtle tone adjustments
Superior to the original Micro Amp model
Works well with both guitar and bass setups
Effective for both Fender guitars and tube amps
No discernible impact on amp tone, just boosts volume

CONS

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about MXR M233 Micro Amp +.

Use cases and applications

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The Micro Amp+ is praised for enhancing lap steel tone with low and high frequencies rolled off and gain increased for a focused mid boost.
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Owners often use the Micro Amp+ in FX loops for effective volume boosts, notably enhancing solos and compensating for volume loss through other pedals.
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Some users prefer the Micro Amp+ as an "always on" pedal due to its ability to enhance sound quality even with flat EQ settings and no gain boost.
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Owners use the MXR for a clean level boost without the coloration, achieved by turning the internal trim pot off, making it ideal for those seeking a pure volume increase.
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Users found success using the MXR Micro Amp+ with a Telecaster into the AC15's Normal channel, particularly for boosting mid/low ranges.
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Owners suggest caution when using the MXR Micro Amp+ to avoid overly bright tones, especially with certain guitars and amp combinations.
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Features and functionality

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The pedal is frequently utilized to balance volume differences between single coil and humbucker pickups, ensuring consistent output across different guitar types.
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Comparisons

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The MXR Micro Amp+ features a mini pot inside to blend Echoplex and Micro Amp style boosts, offering versatility between a more open/uncompressed sound and EP-like coloration.
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The TC Spark Mini is suggested as a compact, inexpensive alternative, while the MXR Mini Booster is favored for its size when space is a concern.
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The MXR M233 Micro Amp+ is described as brighter than the Fulltone Fat Boost, which may affect its pairing with already bright amps like the Vox AC15.
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The MXR M233 Micro Amp+ is mentioned alongside the Xotic EP Booster and Fulltone 2B as preferred options for clean boosting with a Vox AC15.
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User experience

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Some users have had the MXR on their board for over 5 years, underscoring its reliability and long-term satisfaction.
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Value and pricing

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The MXR is noted as underrated, with users finding it available at attractive used prices, making it a cost-effective choice for quality boosting.
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4.5 out of 5

Based on 1 Review and 5 Ratings

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tim_harrison

1268

almost 7 years ago

Works great as a volume boost for solo

I use it as a volume boost in the effects loop of my amp. I don't hear any impact whatsoever on the tone of the amp when the pedal is engaged, all it does is that it provides nice volume boost for solos.