There is a build quality difference between the two. I will speak of the home theater receivers only in this writing for last years models. I was a warrenty service center for a # of companies including onkyo and intergra, I dropped all companies last year because of there pay scales do not meet with the time needed to work on most equitment in todays market.
If you where to open the equivlent rcv's they would look the same in side, same exact layout and board lay out. What seperates them is the build quality. The integra uses higher/quality tolerence resistors and caps on there processor and power supply boards. But all else is the same except the detachable A/C cord and obviously the front panel. They the integras do sound more transperant then the onkyo's but not by much.
Hope this helps you, Gary
If you where to open the equivlent rcv's they would look the same in side, same exact layout and board lay out. What seperates them is the build quality. The integra uses higher/quality tolerence resistors and caps on there processor and power supply boards. But all else is the same except the detachable A/C cord and obviously the front panel. They the integras do sound more transperant then the onkyo's but not by much.
Hope this helps you, Gary