Up for sale is a highly sought-after, discontinued flagship of vintage replication: an authentic MXR Custom Shop CSP104 '73 Vintage Script Distortion+.

This is the premium, hand-wired Custom Shop variant meticulously engineered by Dunlop to nail the exact component topology and audio profile of an original 1973/1974 script-logo box.

Unlike the common, modern block-logo production versions, the CSP104 uses a vintage-spec op-amp engine driving premium, soft-clipping Germanium diodes. This exact combination yields a vastly superior tone: it is warm, dynamic, highly touch-sensitive, and transitions from a woody clean boost into a roaring, vocal hard-rock crunch with a heavy midrange presence.

It is the definitive Randy Rhoads and classic hard-rock tone engine. Also used by Thom Yorke, Tom Morello, Kevin Parker, Slash and occasionally even Kurt Cobain!

It cuts through a band mix beautifully and behaves perfectly when driving the front end of a tube amplifier.

Condition & Technical Specs:

• Model: Discontinued Custom Shop CSP104 Script Reissue.
• Aesthetics: Great condition. The period-correct mustard-yellow finish and minimalist script graphics are clean, vibrant, and fully legible.
• Baseplate: Clean and solid baseplate completely free of sticky glue or heavy wear.
• Power Requirements: True to authentic 1973 factory blueprints, this box runs natively via an internal 9V battery connection to keep the signal path completely quiet and vintage-accurate.
• Functionality: 100% fully operational. The Output and Distortion controls sweep smoothly with zero crackle, and the heavy-duty bypass footswitch engages instantly with total signal definition.

With these custom shop script boxes no longer in production, they are disappearing into collectors' vaults rapidly. A premier opportunity to drop a clean, highly reliable example of 70s rock majesty onto your board or studio tracking line.

Worldwide shipping available. Safely tracked, fully insured, and heavily padded for secure transport. Ships pedal-only (no box).