COLORSOUND: 1971 Overdriver

COLORSOUND Overdriver vero layout v1 5be53da30ae0

The Colorsound Overdriver / Power Boost family went through a few different versions over the years. This layout is for the classic 1971 9V Overdriver version – essentially the 9V successor to the earlier 18V Power Boost, with the same basic three–transistor topology but set up for a standard single-supply pedalboard. It makes a huge, … Read more

SOLA SOUND: Hybrid MKI Tone Bender

MKI hybrid v1 db59224471a7

I’ve had a couple of questions about these recently, and out of curiosity I decided to take a closer look.  In 2024, Sola Sound released a few versions of a hybrid MKI, built by Dave Main of D*A*M. So what is it?  It’s essentially a standard MKI circuit, but with the first two germanium transistors … Read more

Germanium Variable Booster

Variable booster NPN GE v1 83641fd42195

Nothing groundbreaking today—just a variable-gain germanium booster I through together this afternoon, heavily inspired by the D*A*M Red Rooster. I built mine on a slightly different layout, but if I do another one I’ll use this version; it’s cleaner and a bit easier to wire.  And if you like the idea of incorporating a trim … Read more

COLORSOUND: Sakata Hybrid One Knob Fuzz Box

COLORSOUND Sakata one knob fuzz v1 d7444b6b8d40

Macari’s often release pedals that are minor variations on the same circuit – in this case the “Sakata” Colorsound hybrid one knob fuzz has quite a few value changes compared to the previous hybrid they released, which was closer to a stock fuzz box.   Macari’s describe the Sakata as being tuned closer to a MK1.5  I … Read more

COLORSOUND: Hybrid Fuzz Box

COLORSOUND Hybrid fuzz box vero layout v1 4db4f389a541

The Colorsound Fuzz Box has to be one of my favourite fuzz circuits, due to its simplicity and reliable results.  It’s very much a one trick pony, but if you just want a nice thick fuzz, this will to that trick quite well.   The original silicon circuit is said to be a Dick Denny design, … Read more

HUDSON: Sidecar Overdrive

HUDSON Sidecar vero layout v1a e8b2825df1c5

I did a layout for the Hudson Sidecar a couple of years ago, and I retraced my steps recently and found a few things that needed to be updated.  The Sidecar is a progression of the 999 Overdrive, which is Hudson’s version of a ‘green box’ overdrive, made for people like me that don’t like … Read more