Dont understand

what is the total power for the 605. i bought one and i compared it to the onkyo htib (sr-800) not even close as far as sound quality goes. i set both recievers up exactlt the same at left at volume 20 for comparsion. the 605 you can barely hear it. the sr-800 reciever perfect. i am wondering why the 605 cost 600 dollars. i must be missing something. my sr-800 has 110 watts per channel and a 230 watt subwoofer. the 605 has 90 watts per channel and the subwoofer i have no idea what the wattage is. there shouldn't be that much of a difference in sound. im thinking the only reason why the 605 cost 600 dollars is because it has hd-audio. i am very very disappointed with the 605.