Unless there was a particular problem with this pair of amps, the sound of this system was not very pleasant noted by all including the dealer . The Nuforce line in this case was not added. I was disappointed as a customer that it did not sound the way I had read that it should.
It is hard to comment without knowing how much breakin the dealer has allowed for the amp and whether anyone has attempted to re-configure the system or adjust for speakers toe-in position (toeing out). If you read many of the reviews (from professional reviewers to serious audiophiles) from magazines to online forums, they have taken the trouble to tune their systems. NuForce is ruthlessly revealing amount many other things. In addition, NuForce is a very neutral amp and it present the recording as it is. You don't find people describing it as warmth or sweet (to me that's distorted sound but hey, there is no right or wrong, music is very personal). So by introducing a neutral amp into a system that has been very well compensated can suddently appear off balance.
Jason