Rather a long time ago now I posted about Rod Coleman's filament regulators  which I use for heating GM70s (and other DHTs). They...

Christmas rather got in the way but the inductors and capacitors for the Quasar crossovers finally arrived. A rather reassuringly heavy pac...

  Heating of directly heated filaments is a much discussed subject. Unlike indirectly heated valves directly heated filam...

Okay, okay, it's time I wrote about some proper DIY audio, enough shirking and flattering to deceive. And if you're thinking ...

Oh come on, he's having a laugh now surely?! This is his fourth blog and he finally mentions record players, but he's going to t...