[Simon] wrote in to tell us about a headphone tube amp that he just built. It is based on schematics at diyaudioprojects.com that were actually featured on Hackaday in the past. [Simon’s] design adds ...

After seeing video of a beer can turned into a guitar amp, Robert Brenne got inspired to try his hand at home-brewing his own custom music gear out of oddball parts. A mid-20s pop-culture fan, Brenne ...

On the day mini-amps were invented, electric guitar players the world over rejoiced. No longer would they be house-bound when jamming out on their favourite guitar. It is a doubly wondrous day indeed ...

So, this is a pretty ingenious use of spare time. With a vacuum fluorescent display (VFD) from a VCR used as the amplifier, a crafty DIY-er was able to power a pair of headphones. We'll be honest, the ...

I'd like to monitor the amount of power (in watts) going into my speakers. I'm not concerned about over driving them or anything, I'm just curious how much power I'm actually using. I connected a volt ...