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Headphone Repair
A high-end Sony Bluetooth headset gets new soft parts, glue where needed, and a more thorough repair than simple replacement alone.
Pedal Progression: 1 Range Master
Pedal Progression starts with a rebuilt Range Master treble booster using vintage parts, protection circuitry, and a polished new housing.
Easy Naim Hi-Fi power amp upgrades
A straightforward set of component upgrades that can noticeably improve older Naim power amps and similar hi-fi amplifiers.
Silence Your Guitar Amp: Variable Voltage Regulator
A variable voltage regulator lets a loud tube guitar amp keep more of its core feel while behaving better at home volumes.
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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