Well the PM4001 has gone back and I've gone up to a NAD C325BEE which is currently playing Joni Mitchell through the Cambridge Audio S30s. What a wonderful combination!! I put The Planets by Holst on before intending only to listen to Mars, but ended up listening to the entire work. Soundstaging is the best I've ever heard and, IMO, this sounds like far more expensive gear than it really is. The Cambridge Audio speakers are a miracle and sound better than anything I have had before (including £380 Quad 11Ls and the MA Bronze 2s). Now my system is really starting to take proper shape and I'm absolutely blown away by the quality and sheer musicality of the NAD.