It more a religion/cult thing than anything else.

You can get into detailed discussions about any number of aspects of a receiver and argue that it colours sound and you can hear it, but from what I remember, in any properly conducted blind testing, nobody could tell the difference. Alan Loft can probably cite you the studies chapter and verse. Me, I'll just take his word for it.

Tell that to your friend. He will remain unconvinced.

Fred

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Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!