Thursday, December 25, 2025

GUILD / CORNISH: Silicon treble booster

As I was playing around with the Colorsound booster made by Steve Williams of Pig Dog fame, I noticed some similarity to the Guild Treble Booster, AKA the Brian May Box.

I made a slightly simplified version, without the buffer based on one of the Fryer Boosters.  I kind of free-styled the build, working without a layout using a spare piece of vero.  

This is going into a 1590B, which is normally too small for anything that I make.  This will just have a switch and no volume control.

I'll update a bit later with vero details and wiring.  I used a vintage glob top NPN silicon transistor pulled from an old PA head preamp.  



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