David Looser wrote:

It's not necessary to go to full balanced to get over earth loop problems,
differential inputs connected to unbalanced outputs achieves the same thing.

An unbalanced output with equal value resistors in the hot and cold signal lines
( the cold going to equipment ground ) and a seperate screen IS balanced.
Normally just called 'impedance balanced' it provides almost all the advantages
of full-blown active balanced outputs. With a few more resistors it can even
'ground sense' and overcome hum caused by non-equipotential equipment grounds.

A differential ( balanced ) input takes a couple more resistors to make than an
unbalanced one.

PLUS the XLR is an excellent connector compared to the RCA.

Graham


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