From: flegal@domaine.tld.invalid   
      
   On Wed, 26 Feb 2014 15:43:39 +0000, John L Stewart   
    wrote:   
      
   > I checked that in Aspen Pitman's ' The Tube Amp Book, 4th Edition'.   
   > About half the amps listed showed some kind of choke in the HV section.   
   > But seldom tell us how many 'Heinrichs'. So difficult to tell how   
   > effective they are.   
      
   Typically 4H / 100R  for a medium powered fenderish or marshallesque PP amp.   
   Up to 15H for some rare amps, 2H or so for cheaper models (ironically most   
   are SE and really need good CLC filtering).   
      
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