Here's FXDB's interview with Derek Donohue of California Valveworks:
How did California Valveworks start?
I've always loved guitar and got my first guitar when I was 11. In college I got really into guitar and songwriting, especially after my friend Eric Sargent (from Ekoostik Hookah) and I became roommates, as he was already enviably good. At the time I was pursuing a major in physics, so I was learning E&M theory and electronics. On occasion I would muse about building a pedal board full of my own effects pedals. It kind of worked out that way and kind of didn't.
A few years later when boutique pedals were starting to become a thing, I was in a phase where I was really enamored with some of the classic guitar tones like Townsend, Brian May, and Jimi Hendrix. Believe it or not I was working as a nuclear physicist at the time, and making decent money, so I set out to own the same gear those guys used. I ended up (much to my wife and neighbors' dismay) with a Hiwatt, a Fender Band Master, a Rickenbacker M-11 and Vox AC15, trying to capture old tones.
But when I started looking into the pedals they used, it occurred to me "hey, this stuff is super simple and I can make my own". These words have gotten me in trouble so many times, but in this case they proved to be true. Like many amateur DIYers I started with building treble boosts out of my love for Brian May and Queen. I built one for myself that took days, and sounded like crap. But I learned a lot and pretty well had it mastered by the time I was totally done. I built another one for Eric to try, and one for my brother since it was around Christmas time 2006. For the one I built for my brother, I found some 'chicken head' knobs and decided to use it. I gave it to him, I asked him what he thought and he said something to the effect of "who wouldn't like a free range master with a chicken head knob?" That was how the name Free Range Chicken was born. It became our first and most successful pedal, and the springboard for what California Valveworks does and all it has become.
Who inspired or helped you?
When I set out to make a treble boost, I bought an Analog Man Beano Boost, and having spent some time in product development really dug into the quality, detail, assembly, components, etc. Analog Man makes quality stuff and I have always held his pedals up as the standard of quality we try to meet or exceed. I've never met or talked to him, but I tip my hat to him for his great pedals and inspiring me to make my own.
Like all DIYers I buy a lot of parts from Small Bear Electronics, who has been indispensable to me, as has John at Effects Connection. Eric is a walking encyclopedia of gear knowledge and has maybe the best ears in the known universe. He has been a major factor in determining our direction and assuring our pedals can meet the challenge of the big stage. Also, many of our customers have kept in touch and provided valuable input over the years. We aren't the biggest operation in the world but we will hear feedback from anyone who cares enough to provide it. In that regard California Valveworks is as much the product of its own customers and peers as it is of anything I've done. I'm just the guy who sweats over the soldering iron.