I was reading What HiFi magazine (or another UK mag) and this receiver won a comparision test of several receivers. I was curious about the supposed "UK tuning" that this receiver apparently has... anyone know what that means? Also, it's a 100Wx6 receiver... is there an American equivalent? Is the 2ES or the 4ES pretty much the same? I was amazed to see the Sony beat out the Marantz and others.