a 74xx-defined radio
Video Appetizer TLDR I built a shortwave radio receiver from scratch using only cheap and easily available components, i.e. standard transistors, op-amps and 74xx logic chips. No typical radio parts […]
Category Archives: analog projects
Output-Transformer-Less Tube Guitar Amplifier
Another tube amp project. I built this in Summer of 2011. I was passing by a garbage pile of electric devices and I found the wreck of a vintage tube […]
An EL84 tube guitar amplifier
Another old project (2010). Not much to tell here. Just showing some pictures. I got my hands on an old (OLD!) electrophoresis lab power supply. Really sturdy metal enclosure. Believe […]
digitally controlled HiFi Amp with 4 way mixer
Motivation Though I am a musician I don’t care for calling an expensive hi watt stereo my own. For years I have used a homebuilt stereo amplifier built around the […]
MFOS Sound Lab Mini Synthesizer (Part 2) – A MIDI2CV Converter
Motivation So my MFOS Mini Synth is working and a treat to the “synthetophile” ears. But at the time being it makes just experimental noises … what about connecting a […]
MFOS Sound Lab Mini Synthesizer (Part 1)
At some point I was obsessed by the wish to build an analogue synthesizer. Excessive googling lead me to this Website: http://www.musicfromouterspace.com/ Great site with lots of HQ schematics, board […]
12AT7 Overdrive INSIDE the Korg CX-3
In the fall of good old 2011 I decided that it would be a nice thing to have a tube overdrive not on top of my organ but inside the […]
Low Voltage Organ Overdrive with 12AT7 (ECC81)
It was 2010 I guess, I have been using my JCM800 preamp for distorting my KORG CX-3 compact organ (famous Hammond C3 clone, Manfred Mann plays it, too). But the […]
JCM800 preamp
It was back in the summer of 2007. I was a young man, curious about the wonders inside those little glass bulbs that are powered with possibly lethal voltages and […]
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