Wow...I'd be interested to learn about his listening habits. Not program material, but system choice. He seems to have roughly 5 (could be wrong) full throttle high end systems setup and available. Does he listen to jazz on one system and eastern classical on another? Morning system and evening system? Perhaps it all just changes with the mood. As someone with a single system (unless you count iPod or computer with headphones), it's intriguing for me to see how others use (or don't use) their multiple systems.