[Josquin des Prez]

Yes, PRat = Pace, Rhythm, and Timing.

When I listen to my system, I unconsciously start tapping my toes in reaction to the music. Not all systems -- even ones that sound really good -- have that effect. Naim Audio is renowned for it.

PC is right, With the combo of Rega, Dynavector, Naim, Dynaudio, and REL I have pieced together system of components that are all very neutral and very fast, resulting in great PRaT. If you want a single system for all kinds of music, this is a good approach to take.