I have Thiel CS6s and drive them with a Krell FPB 200. The Thiels require lots of current. Krell amps have that BASS slam which is just what the CS 6's need to shine. The CS 6's need care in placement, 2'min from sidewalls and 4' to 5' from rear walls. They are very heavy and when spiked will scar a wooden floor. I recommend taking the Krell you have down to the dealer and audition all the speakers on your list. If you can have the dealer do a in home audition, so much the better. Speakers always sound different in the showroom. I hope I helped. As we say in Las Vegas, Good Luck!
