Just got a new power amp


Just received a PS Audio S300 to pair up with my Linn streamer.  They are only about a foot apart.  PS Audio recommends XLR cables.  Will I notice any difference if I go with the XLR over good quality RCA connections?

Currently running RCA and gotta say it sounds phenomenal.

rjinaz86323

kijanki

He talks about benefits of balanced cables and differential inputs. It has nothing to do with "Fully balanced power amplifier"

Actually, it has everything to do with "fully balanced" amplifiers, and @atmasphere  is especially well known for his balanced amps. Owner Ralph Karstens even holds an interesting patent covering his topology.

I've now provided to you three original sources that reveal your beliefs to be myths. 

Post removed 

At the risk of dragging out the "balanced" discussion, and for what it's worth, my statement about the S300 being fully balanced came directly from a conversation with PS Audio and from their literature.  They state the S300 is a dual mono amp with separate power supplies (which I can confirm because I had to fix it when I bought it) and, I quote from the 'features' list, "XLR 'True' Balanced Input".  Is it just advertising speak, maybe...

Here is the link to their product literature (same link that @cleeds posted):

https://www.psaudio.com/products/stellar-s300-power-amplifier?srsltid=AfmBOorSOah2MfUtjhdiEtDofo_33rZPxhQjskOADreDpaqznZuPQ-7S

Thought the conscience was to always use XLR, they have a much lower noise floor, carry less noise, have less signal loss, of course higher gain. 

Why would you not? Lowering the noise floor is always an improvement.  

If there is an audible difference, something is defective.

@kr4 I'd put it the other way 'round. We audiophiles are very used to hearing interconnect cable differences. But recording engineers, who use balanced lines in a studio, are not. When the balanced line system is set up properly (as usually seen in a studio) the 'sound' of different interconnect cables goes away. 

Having done many auditions of this difference over the last 40 years I can say that RCAs usually don't sound as good as a result and nothing is defective; this providing that the balanced line equipment actually supports the balanced standards (such as AES48). 

"Fully Balanced Amplifier" means that balanced input section (instrumentation amp or transformer) is followed by two separate amplifiers, each driving one speaker terminal.

@kijanki Could you explain what is meant by 'two separate amplifiers'? Do you mean two single-ended amplifier circuits or two push pull amplifier circuits, or something else?