From: ruffrecords@yahoo.com   
      
   Audio Empire wrote:   
   > On Wed, 24 Mar 2010 03:54:59 -0700, Arny Krueger wrote   
   > (in article ):   
   >   
   >> "David Nebenzahl"  wrote in message   
   >> news:4ba97b4f$0$2381$822641b3@news.adtechcomputers.com   
   >>   
   >>> I'd say that since a differential amp practically   
   >>> eliminates common-mode noise, there's no reason *not* to   
   >>> use one (which, after all, was the question the OP asked).   
   >> Transformers are an effective means of elimination common-mode noise. They   
   >> are as a rule more effective than differential amplifiers. If you have an   
   >> input transformer, you don't need a differential input and you pick up some   
   >> inherent protection against EMI and casualty losses.   
   >   
   > Now that's interesting. My sources all say that transformers have a lower   
   > common-mode rejection ratio than can differential amplifiers.   
   >   
      
   'Have' and 'can (have)' are not identical conditions.   
      
   Cheers   
      
   Ian   
      
      
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)