Kappa 8s? I have them and also had them when they first came out. I agree with the high current statements. I powered mine with a Threshold T 200 on the highs and a Parasound 2200II on the bass. The sound was as good as it gets with the Kappa 8 or Kappa 9! I then used the Threshold to power them full range, I was not that surprised to find the Threshold play clear and with power to spare. The T 200 is rated class A at 100 watts into 8 ohms, but will double power at 4 ohms; the Kappa 8 will drop down to a bit less than 2 ohms in the low frequency, here, the Threshold puts out 400 watts a side! So, think about this double up as impedance drops in half. It is the gain in power between 4 and 2 ohms that is so critical for the Kappas, The Parasound is a good amp, but puts out about the same 350 watts into 2 ohms, as it does into four. Forget the older McIntoch amps on these speakers, or tubes, as they have taps the adjust the voltage and permit no more power at 2 ohms as they do at 8 ohms. The Kappa 8.1 is really not in the same class, but not so current hungry. Any big relitively high current amp will work on them. try the Rotel 1090, you can grab one on eBay for about $1500.