Benson Portable Distortion 424 mkII

The Benson Portable Distortion 424 mkII: Cassette-Inspired Dirt with a Twist

Authentic Lo-Fi Guitar Distortion Pedal

Inspired by the gritty glory of four-track cassette recorders, the Benson Portable Distortion 424 mkII takes a deep dive into the quirky, colorful realm of lo-fi distortion. Based on a channel strip from the legendary 424 mkii unit, this circuit has been carefully adapted into pedal form bringing those distinctive recording artifacts to your pedalboard with surprising finesse.

Switchable Buffer and Pickup Loading Character

The 424 mkII delivers unique character right from the input, thanks to a dazzlingly low input impedance that interacts aggressively with guitar pickups. For players who want more conventional dynamics, a side-mounted buffer switch opens up high-frequency detail and allows flexibility in pedal chain placement.

Clean Boost to Fuzz Mountain

The gain structure on the 424 mkII is vast. From subtle clean enhancement to full-throttle fuzz, this pedal traverses a wide sonic landscape. The internal 18V headroom gives it ample punch, allowing it to behave like a raucous studio preamp when it slams into your amp. The EQ section is versatile and musical, shaping the pedal's tone from smooth and smoky to crispy and cutting.

Quirks that Honor the Original

Control tapers on the 424 mkII preserve the personality of the original channel strip, including a trim knob that works in what Benson calls a “uniquely stupid” way. This design adds to the unpredictability and charm that makes this pedal feel like a playable instrument in its own right.

Modern Build with Vintage Vibes

With modern reliability and boutique craftsmanship, the 424 mkII includes internal 18V conversion for expanded dynamics, while still running off a standard 9V Boss-style power supply. It’s lo-fi without the liabilities, retro without being restrictive, and fun in a way that no standard overdrive can match.

Specifications:

• Power Requirements: 9VDC center negative, 30mA draw ,do not subject this pedal to more than 9vdc or the pedal or power supply could be destroyed.

• Internal Voltage: Converts to 18V for added headroom

• Input Impedance: Low, with switchable buffer for standard impedance operation

• EQ: Versatile tone-shaping controls

• Gain Range: Clean boost to full fuzz

• Control Behavior: Modeled after original 424 mkii channel strip

• Battery Compartment: Yes (disengages when external power is used)

• Accessories Included: Original box

• Power Supply Included: No

This effects pedal ships fully insured with signature required.