Tools, Tones and Toys for Guitarists
A somewhat polarising classic – the Boss DS-1, with a slight twist, as this has the Joe Davisson discrete diode-compression opamp onboard instead of an IC. BOSS DS-1 DIODE COMP OPAMP – VERO LAYOUT BOSS DS-1 DIODE COMP OPAMP – WAMPLER STYLE JCM MODS This is what I ended up being happy with on the … Read more
After some success with the Trident mic preamp (AKA the Revox A77 Preamp), I thought I might try another section of the console – this time the EQ / Channel output amplifier. It looks interesting on LTspice, as towards the end of the gain range, you get a distinct bump in the mid-range. At the moment I’ve … Read more
A variant of the Matsumin Velvecaster, the Frequency Central Valvemaster. I really like Valvecasters, so I was looking forward to making this, but it just wasn’t working for me on the breadboard today. I might try a different valve / test the valve I’m using in a valvecaster circuit just to make sure it … Read more
I quite like some of the guitar sounds from The Beatles Revolver album, and after looking at the Vox Supreme, I thought I might have a play with the UL series preamp. I’m also waiting for the build docs to come out for the Aclam Dr Robert on pedalpcb as a comparison. It’s also a … Read more
A simple mod to provide more flexibility for the timbre range of the Buzzaround. One side of the timbre control is 15khz high-pass filter, which is very high. The useful range of the timbre sweep is rather limited as a result of this, and there’s also a bit of volume loss that comes with this. Some D*A*M … Read more
I used Kit Rae schematics, but I did not follow the same component numbering, as I don’t find it all that intuitive. Kit did it that way for a good reason, this way works better for my brain. There’s also this excellent post by Kit Rae on the EHX forum, broadly describing differences between versions. … Read more
D*A*M BUZZOTRON – EARLIER VERSION SCHEMATIC D*A*M BUZZOTRON – LATER VERSION SCHEMATIC 27k instead of 22k resistor to Balance pot and 33k instead of 10K resistor from 1n on the Attack control to ground (lowering the filter frequency)
