Hi guys, I'm new in B&O world, and I've my 'new' beogram 1700, so muy doubt is now on the preamp I must add to the turntable. I like very much (looking only specifications: Single-ended A-class, double mono...) the Cambridge Audio 540P: http://www.cambridgeaudio.com/summary.php?PID=28&Title=Azur+540P But I've read much about