Birmingham, United Kingdom
About this listing
The MXR Custom Audio Electronics MC401 Boost/Line Driver is a professional-quality clean boost designed with Custom Audio Electronics.
Offering up to +20dB of transparent boost, it can be used to lift solos, push an amplifier or drive pedal harder, restore level through larger pedalboards, or help maintain clarity across longer cable runs.
Its simple single-control layout makes it easy to integrate into almost any guitar or bass rig.
Clean Boost & Line Driver
The MC401 provides an adjustable 0dB to +20dB boost.
It works well for:
Solo boosts
Driving valve amps
Pushing overdrive pedals
Restoring signal level
Larger pedalboards
Longer cable runs
Its low output impedance also allows it to function as a line driver, helping maintain signal strength through more complex rigs.
Simple Controls
Operation is deliberately straightforward:
Boost – Adjusts output level from 0dB to +20dB
Footswitch – Engages or bypasses the pedal
LED – Shows effect status
Key Features
MXR Custom Audio Electronics MC401
Boost / Line Driver
Developed with Custom Audio Electronics
Up to +20dB clean boost
Transparent boost character
Line-driver functionality
Single Boost control
True hardwire bypass
1MΩ input impedance
150Ω output impedance
9V battery operation
External 9V DC power
Approx. 1.5mA current draw
Rugged MXR enclosure
Pre-Owned
Condition
Pre-Owned
This pedal may show cosmetic signs associated with previous ownership and normal pedalboard use.
It remains fully functional and ready for rehearsal, recording or live performance.
Please study the listing photographs carefully for the individual cosmetic condition of this pedal.
What’s Included
✔ MXR Custom Audio Electronics MC401 Boost/Line Driver
✘ No Power Supply Included
Power Requirements
The MC401 can be powered by:
9V battery
Suitable 9V DC power supply
Current consumption is approximately 1.5mA.
No external power supply is included.
Checked & Tested
This pre-owned MXR MC401 has been checked by the Fair Deal Music team for general operation before being offered for sale.
Ideal For
Clean solo boosting
Valve amp boosting
Gain stacking
Large pedalboards
Long cable runs
Guitar
Bass
Live performance
Studio rigs
Fair Deal Music Verdict
The MXR CAE MC401 Boost/Line Driver is a simple but extremely useful pedalboard tool.
Its +20dB clean boost makes it ideal for solos or pushing an amplifier harder, while the line-driver function helps maintain signal strength across longer or more complex rigs.
The compact format, true bypass and very low current draw also make it easy to add to almost any setup.
Supplied without a power supply, this is a strong pre-owned option for players looking for a transparent boost with genuine signal-management benefits.
Fair Deal Music is an independent, family-run music retailer established in Birmingham in 1987.
Price£105
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from Birmingham, United Kingdom
