I am a big Kappa fan (of the original series, not so much the X.1's , I prefer non-ported) I have 2 pairs of Kappa 9's, 1 pair of 8's, 1 pair of 7's, 1 pair of 6's and 2 pairs of 5's. I have fried a couple of amps that were not up to the job on my Kappa 9's. I too through recommendations tried the Sunfire Signature amp. It is to say the very least a match made in heaven. I bi-wired the Sunfire Signature (600 watts per channel into 8 ohms. 1200 into 4 ohms. 2400!!!! into 2 ohms and 4000!!!!!!!!! into 1 ohm. and just FYI the Kappa 9's can drop into the 0.9 ohm range at times, so mega power is available as needed) The Kappa 9's work best bi-wired also. And with the Sunfire's choice of current, voltage or both outputs it makes the most of bi-wireing. I could really go on for days and days singing the praises of this combination. I am now a huge fan of Sunfire products as well as I now own the Classic Vacuum Tube pre-amp, 4 Sunfire Sig Stereo amps, Sunfire Theater Grand II, and the Cinema Grand Sig 5 channel amp as well. I only list this equipment so that you know that I know that of which I speak of. (or something like that) As far as what you should pay for a Sunfire Signature, buy used by all means. They have a very good warranty program that covers your amp for 5 years from date of manufacture even if you don't have the reciept or are not the original owner. And any price less than $2000 is a good deal for this amp that retails for $3195. And not to plug my own sale, but I have one more Sunfire Stereo Signature amp than I need and I was planning to sell it soon. Contact me if you are interested and then I will place an ad on Audiogon so they get their listing fee. But even if you don't want to buy it from me, PLEASE use this combination of Kappa 9 and Sunfire Stereo Signature (not the normal 300 wpc non-sig version either) and by ALL MEANS please bi-wire according to their instructions for the best results.
Regards,
Joel
Regards,
Joel