Here you’ll find a collection of things that I do, make, say, and think. It collects projects published across my sites, including custom-built guitar and hi-fi amplifiers and effects, custom PC servers, and rescued or upcycled hardware. Simply a central place to collect what I’m doing with some of my creative energy at any given time.
If you are looking for my professional information go to >JohannesJohansson.com<
Categories
- DIY (30)
- DIY Audio (18)
- DIY Computation (8)
- DIY Misc (5)
Random Posts
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Custom DDC: 1 Digital to Digital Converter; USB to I2S over HDMI; S/PDIF; AES
A DIY digital-to-digital converter build with USB input, improved clocks, and outputs including I2S over HDMI, S/PDIF, and AES.
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Homelab: 2 Tiny 24 Core virtualization Computation with hacked hardware
A compact homelab build using repurposed server CPUs and hacked hardware to create a tiny 24-core virtualization machine.
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Custom DDC: 2 Bluetooth & auto switching
Custom DDC expands with Bluetooth and automatic switching, aiming for cleaner hi-fi streaming without manual input juggling.
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Guitar Rebuild: 1 Onboard preamps & hardware
A Japanese 1982 Matsumoku guitar becomes the basis for a rebuild focused on onboard preamps, hardware, and a heavier final voice.
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Cat Tree
A simple DIY cat tree built from leftover wood and sisal rope, adapted to survive balcony use better than the usual fluffy versions.
Dumble Overdrive Special
Build notes and progress entries around a Dumble Overdrive Special-inspired amplifier project.
Dumble Overdrive Special: 1 Head & circuit
21 July 2022
The Dumble amplifiers are clearly the highest priced guitar amplifiers ever to exist, and with good, or at least understandable, reason. These amplifiers fetch more than 50.000$/€ a piece, a staggering sum. Why this is understandable can be gleaned by two or…
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Dumble Overdrive Special: 2 Headshell
21 July 2022
Head, strange word for this but is what it's called, a head being the amplifier, presumably sitting on the 'body' represented by the stacks of speaker cabs. Using a schematic from the ampgarage.com forum as a base I set out to do…
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Dumble Overdrive Special: 3 Mods
13 April 2023
Doing a copy of an amp can be a good learning experience, modifying it to suit your needs and taste, however, can be the really rewarding bit. Here I detail added FX loop, footswitchable; dual HRM, with bypass, FETboost, moved gain bias…
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