my amplifier is a parasound hca-1200. the rms power output spec is 200 watts@8 ohms; 300 watts@4 ohms. (per channel) the current capacity is stated as 40 amps continuous. I am assuming this is per channel also. my question is; is the current capacity dependent on resistance? in other words, as I am driving 4 ohm speakers, is the current capacity going to increase, or does it remain 40 amps? thanks.