Quote:
Originally Posted by
retate 
The fact that the 5507 does not support Audyssey Pro does not indicate whether the firmware contains the code to support Audyssey Pro. Do you have a basis supporting you position that support for Audyssey Pro is not in the 5507 firmware?
Audyssey Pro capabilities are more than likely actually in the 5507, seeing as how internally all the parts inside of it are the exact same parts as in the Integra 80.1, however the firmware has not been provided to enable it to be used. Plus there is the fact, that even though Onkyo said at their first announcement that the 5507 was Audssyey Pro capable, is that they also later on changed their position on that, and instead was rather adamant about the fact that Audyssey Pro was not going to be enabled on the 5507. As it was a way of differentiating it from the 80.1, which considering they at first said yes and then soon changed it to no, pretty much proves all the needed internal parts are already inside the 5507. But that they can easily control it being as far as being enabled and available for use or not, just by switching on or off within the firmware.
Quote:
Originally Posted by
retate 
Having one firmware variant support models with different features is a common practice which is being used by Onkyo.
Yes, so the firmware can detect and enable or ignore differences and sometimes can even be used on more than one model, nothing new.
The Onkyo SC885 shared the same exact firmware with the Integra DTC-9.8, and the Onkyo SC886 shared with the Integra DTC-9.9, and all four of those pre-pros even though they were advertised as being Audyssey Pro capable. When they were first initially released they did not support Audyssey Pro yet, until they were provided with the firmware update that enable it to be used. So yes, the option for Audyssey Pro can indeed depend on the firmware being available to enable the function, even though all the necessary parts are already inside of the product.
But! As you posted earlier, one is not always the same for all!
Quote:
Originally Posted by
retate 
A binary comparison of the firmware for the DHC80.2 and the 5508 show the firmware is very similar, but there are some differences in each of the three files.
Just the fact that there are differences in the two firmwares, on two products that for all practical purposes are the same product but just with a different nameplate on them, and have the same internal parts. Also makes it easy to see how one could have certain additional feature enabled, such as Audyssey Pro, where the other one does not. Even though they both have all the same needed internal parts to do so.