On 02/01/2010 22:09, Spike wrote:


Have a Google for 'humdinger' (and/or 'hum dinger').


I often wondered why the hifi brigade didn't go down the road of heating
the valves with regulated DC to minimise any induced hum, especially
where they use directly heated stuff with no cathode.

Maybe they do and I'm just not aware of it?

--
All the best for 2010 de Walter.