OK, so my information still varies slightly depending on who my contact is. I have chatted with three different sources and this is what I can gather of these points.
Ø Integra engineered power supplies-Labeled Integra
Ø Precision matched parts selection
....are part of the same marketing line. They supposedly use slightly better parts, at a higher cost and a slightly better power supply than it's standard line counterpart. This power supply is able to have a slightly higher current capacity output than it's standard line counterpart. It was emphasized that the difference it minor, but that there was a difference. The Integra line should also be slightly more expensive.
Ø Extensive use of coupling caps throughout the signal paths
I am still trying to find out clearly what makes this different than the regular line though.