[Ian Bell[_2_]]

Audio Empire wrote:
On Wed, 24 Mar 2010 03:54:59 -0700, Arny Krueger wrote
(in article ) :

"David Nebenzahl" wrote in message
.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

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