Jim Dunlop MC401 MXR Boost/ Line Driver Review (April 2024)


Last updated on April 9, 2024 4:34 pm Details


In this review post, we’re going to be discussing the Jim Dunlop MC401 MXR Boost/ Line Driver, including an overview of its unique features.

Product Description

The Boost/Line Driver provides up to +20dB of ultra-clean boost to rejuvenate the sparkle, punch, and brilliance of your sound. This pedal can be powered by a 9-volt battery, a Dunlop ECB003 9-volt adapter, or the DC Brick, Iso-Brick, and Mini Iso-Brick power supplies (not included).

Product Features

  • MXR joined forces with Custom Audio Electronics founder Bob Bradshaw to bring you the MC-401 Boost Pedal
  • Cleans up nicely when you roll back your guitar volume, making it extremely responsive to picking dynamics without thinning your tone
  • High-quality components provide quiet operation and trouble-free interaction with other pedals on your board
  • Custom Audio Electronics has made limited quantities of pedals for select clientele since 1980 and has now teamed up with MXR to bring these pedals to the masses
  • This boost pedal features the unique sonic stamp of legendary designer Bob Bradshaw

Pros & Cons


  • Well-built
  • Affordable
  • Compact Size
  • The ideal energizer
  • It gives your sound more definition.


  • Does not possess an EQ
  • It has the potential to slightly color your wet signal

Jim Dunlop MC401 MXR Boost/ Line Driver Demo

Our Verdict

Overall, it’s no surprise that Bob Bradshaw and MXR collaborated to create such a powerful pedal. Without a doubt, the MC401 Boost/Line Driver is among the best boost pedals available. Though it isn’t the most versatile object in the world, it excels at its job and we can’t expect much more from it. What I’m about to say applies to the vast majority of boost pedals, but this one will shine once you explore various combinations. Have a great day!

Where to Buy

The best place to buy this product has to be Amazon, due to their competitive pricing and fantastic customer service.

Jim Dunlop MC401 MXR Boost/ Line Driver

as of April 5, 2024 11:54 pm

Pricing History

Price History for Jim Dunlop MC401 MXR Boost/ Line Driver


Current Price $108.21 April 5, 2024
Highest Price $119.99 October 10, 2023
Lowest Price $108.15 October 1, 2023
Since October 1, 2023

Last price changes

$108.21 January 1, 2024
$108.20 December 24, 2023
$119.99 October 10, 2023
$108.15 October 1, 2023

as of April 5, 2024 11:54 pm
Last updated on April 5, 2024 11:54 pm

Buyers Guides This Product Is Featured In

Best Boost Pedals Under $100 (2022)

Additional information

Item Weight

1.1 pounds

Product Dimensions

5.8 x 4.8 x 3 inches

Domestic Shipping

Item can be shipped within U.S.

International Shipping

This item can be shipped to select countries outside of the U.S. Learn More

Country of Origin


Item model number



1 9V batteries required.

Is Discontinued By Manufacturer


Date First Available

May 5, 2007

Color Name



9 Volts


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