Thanks for the kind comments.
Joeweiss, the C500t is an absolutely incredible sounding unit and looks undeniably stunning on the equipment rack. I didn't compare it to other Mac pre-amps but I figured the 2300 would be a lateral move from my previous pre, the BAT VK-31Se. As other owners will tell you, the 500 is not a "plug in and play" unit. It is very complicated and can be difficult to set up. I recently had a power surge and subsequently, only one channel of my system was working. After much experimenting over the course of several days, it was determined that the umbilical cords that connect the two units of the 500 were at fault. Mac is sending out a new pair this week ($110). I would still highly recommend the 500T based on the sonics but warn of its complexity.