I have been doing research for a new reciever and have narrowed my choices a bit, however I am curious about something. I understand all about the power is rated (some companies do it on each channel seperatly, others with all channels driven, etc...) My question is this; if a reciever like the HK325 is rated for 50watts X 7 and I will only be using a 5.1 setup, will the wattage be a little higher for using 5 channels? Or does the reciever use 7 seperate amps that put out the same wattage no matter how many are connected? I noticed that in the specs it had the same power rating in both stereo and with all 7 channels driven, however I have noticed in many independent tests these numbers are often a little different in real world usage. Thanks in advance, I am more curious than anything, my speakers have a good sensitivity (91db) so I am not necessarily worried about this, just wondering how it works. THANKS!