View Single Post
  #34   Report Post  
Posted to rec.audio.tubes
Ian Bell[_2_] Ian Bell[_2_] is offline
external usenet poster
 
Posts: 861
Default Low Frequency Mains Noise

Eeyore wrote:

Ian Bell wrote:

Since there are untold preamp designs with unregulated
supplies


Bad preamps you mean ?

Graham



You tell me. I have the schematics for many broadcast consoles and
professional music mixers from the 50s that use unregulated supplies.

Cheers

Ian