About the beginning of 2015 I purchased a 2 channel class A 9 watt Valve amp. Sooner than later I built a A/B-Y Switch so I could foot control the channel section! Now this thing has no master volume control or tone controls in any form it just has a cool volume and hot volume that work independently of each other. Soon I was working the volume control and I found the amp had a sweet spot where the controls where set to obnoxiously loud and the guitar was set to very quiet.
In the beginning this was great till I wanted to switch on my Fuzz Box thing.
I could either
After reading state-of-the-stomp-build-a-preset-volume-box I thought why not have two volume settings and a bypass? So My creation had just that, the 40's analogue tech and turn of last century digital tech with connectors that can trace there origin to 1878. As a bonus it all fits in one box at 111x60x30mm that's about (4.4”x2.4”x1.2” imperial/customary units) as you can see it is quite a tight fit.
So after a successful build of the ABY box and 6 months of testing It was decided to build it the same way! The only quandary is do I tell all? or how the label is made? Or let you work it out yourself. But I will leave a rough copy of the switching schematic not a nice point to point as the wires are laid out. 30 odd years ago I was paid to work things like this out, they say this generation is smart so work it out yourself.
So what does it do?
How does such a thing be set in the first place
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