Thanks for the comments! It took quite a few amp combinations to get the klipsch to sound the way I wanted them to sound. I went from Yamaha to marantz to Aragon seperates till I finally settled on the Cayin. The Cayin has the warm musical sound I was looking for and believe it or not has way more balls then my 200.2 Aragon did. If anybody has used tubes with the PSB please share your comments.