I should have given more details, my thought was given the 2500 was doing fine in terms of power that would be enough info. I just want to make sure I am not taking a step in the wrong direction. Main reasons for upgrade is connectivity and current video/audio formats. This is a system rebuild, I sold most of my gear a few years ago.
Currently I only have the 2500 running the 7nt's and a CDM CNT. Will be purchasing the Monoprice 16in THX sub and haven't decided on surround speakers yet, possibly monoprice.
Thanks again.
The AVR-X4700H is a proven product now and it measured very well, most likely much better than the RX-A6A. If you ask for input on the so called "sound quality" reason, at this level of AVR I would say while the Denon measured better on the bench, in practical terms they are both transparent enough especially for watchin movies. Some will say one sounds better than the other but unless they have done truly apple to apple comparison listening tests, and followed good protocols, such claims would be based on each individual's perception and listening environment, expectation bias etc., that may not apply to you. Between the very outdated RX-V2500 though, I would say that under many conditions you may actually hear some improvement in sound quality if you go with either the AVR-X4700H or the Yamaha RX-A6A.
So unless you can have two side by side to do a proper test, you best bet would be to make your choice based on objective data, such as features, specs and measurements. Yamaha in general has been said to be more reliable, but I am sure how reliable that is either.
I suggested our resident insider
@M Code to try and give us an update on whether in recent years (say for the last 3 to 5 years) Yamaha is still the king of reliability in terms of failure rate, and being bug free but haven't heard from him for a long time.
There has been a lot of users who experienced both Y and D/M's comparable models and found Yamaha's run cooler. In my own experience, I have no concerned with D or M's potential heat issue because I always use a fan or 2 and have them on full time at low speed regardless.
Just one more point, if you decide to go with the Denon, and if you are one who may be concerned about the news that D+M at one point mentioned since the spring of this year, he had to replace the AKM DAC IC (shortage due to the factory fire) and they have not disclose the replacement IC. If you search on the net, you will find all kinds rumors with almost no substantiated facts available at the moment. To play it safe, some people would check the serial number before purchase, to make sure they would get one that was made prior to the DAC IC replacement.