Dear Sir,
THe JC-1's are overpriced for the performance. I have Aragon Palladium 1K's with my Whispers and they are MAGNIFICENT! I ran Legacy Sig III's in PARALLEL with Legacy Classics before I had the Whispers and the Palldiums didn't break a sweat - nor do they now. They have absolute superb control over the Whispers. The power and clarity are amazing.
Aragon was made by the independent Mondial group, but is now sold by Klipsch. Palladium 1K's were obsoleted about a year ago, because they cost too much to produce. They are fully differential, 600 WPC into 4 Ohms and class A to about 65 Watts into 4 Ohms. They are great looking amps, as well.
If you can find Palladium 1K's, GET them! I recommend you call Bob at Avalon Audio (www.avalonav.com) in Medford, NJ. He still has an ad on Audiogon for them at $3K / pr., I believe. His phone number is 609-654-7752. His e-mail is avalonav@aol.com. He is a great guy and saved me a lot of $. Good Luck and enjoy those Whispers!