Ok so far that sounds alright for me. I heard Robert's at Scalford and after a little thinking and raising funds etc I ended up with a Level 4 Gen5 with Duelund caps no pre amp but usb module fitted. A huge improvement on the level 2.8 to 3ish I had heard recently in my system. My understanding is the Level7 comes with Duelunds and that might explain the tautness in bass. Probably wishful thinking on my part but Level4 with Duelunds I think gets you a long way up the ladder in Lampyland.
Nice toy to have for a loan.