Hi Britishmuzik
In addition to your findings I just found that the NAD PP2 with the equipment made the music lifeless and sterile. I think the biggest issue I had was with the treble. Everything seemed to really be bright sounding. When I got the 640P I was A LOT happier with how the music sounded. Everything was just more alive but never punishing. I'm sorry I don't have the grasp of the audiophile vocabulary like many other members here but this is what I really felt when I heard the music coming from my system with these phono preamps in place.
In addition to your findings I just found that the NAD PP2 with the equipment made the music lifeless and sterile. I think the biggest issue I had was with the treble. Everything seemed to really be bright sounding. When I got the 640P I was A LOT happier with how the music sounded. Everything was just more alive but never punishing. I'm sorry I don't have the grasp of the audiophile vocabulary like many other members here but this is what I really felt when I heard the music coming from my system with these phono preamps in place.