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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Dumble Overdrive Special: 2 Headshell
A woodworking-focused Dumble Overdrive Special entry covering the amplifier headshell build.
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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.
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Dumble Overdrive Special: 1 Head & Circuit
An introduction to the Dumble Overdrive Special build, why the original amplifiers are legendary, and what makes the project worth chasing.
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Guitar Pedals: 2 Splitter/Buffer
A compact splitter/buffer build for running two guitar heads at once, with practical fixes to the original circuit values.
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Restomod Car: 2 Brakes and Suspension
Restomod Car moves on to brakes and suspension, with oversized hardware, rust work, and stubborn front-end teardown.
Custom DDC (Hi-Fi)
A hi-fi oriented digital project focused on a custom digital-to-digital converter and its evolving feature set.
Custom DDC: 1 Digital to Digital Converter; USB to l2s over HDMI; S/PDIF; AES
28 February 2026
Digital to Digital Converter, this little DIY utility box provides a way to escape a number of digital issues impacting sound quality in hi-fi. It takes usb output from a main streaming system provides it's own sound card, high quality clocks and…
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Custom DDC: 2 Bluetooth & auto switching.
19 April 2026
Digital audio as used in Hi-Fi certainly often comes from a music streamer, yet the usefulness of Bluetooth cannot be understated. So, next step was to include a high fidelity bluetooth module, and automatic switching of it. I did have a stand…
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