I am pleased to see a system with many similar components to my system. I also have IRS Beta's (as well as IRS V's that I do not presently use), and an AR SP-15 pre-amp. I drive the system with Cello performance amps and Krell MDA300's. I have always wondered what the system would sound like with tube amps like the Carver Silver Sevens.
Have you ever hooked up any amps other than the tubes, and what was your experience? Do you know of any source for the Carvers? They don't seem to appear often for sale.