My 990 just arrived yesterday. I'll be driving 7 channels of Krell, recently purchased used on AudiogoN -- KAV-250a for R/L, KAV-500 for the others.

This is a step up to separates from a 9 year old Denon AVR-5600/Definitive Tech system. Until the 990 came I was driving the Krells with the pre-outs on the Denon, so I'll be able to compare just the Denon/990 swap.