QUOTE(SSJBen @ Feb 16 2016, 05:41 PM)
It actually depends on which version of YPAO.
The YPAO that comes with receivers after 67x are actually very comparable to Audyssey. The old YPAO from before that was decent at best.
Read this thread for more info -
http://www.avsforum.com/forum/90-receivers...ny-dcac-vs.htmlI've tested both the YPAO version from a rather old Yamaha v463 vs the latest one in the Yamaha v679. There's quite a noticeable difference between the both. AFAIK, most people has only ever heard of the YPAO from the early-to-mid 2000s, not the newer improved one from the last couple of years.
i have experienced rxv463 & rxv477 before.
also audyssey xt from matantz avr.
is indeed upgraded. old ypao run noise signal, tapping & crossover.
new ypao has similar bird chipping to audyssey. actually is square wave frequency swipe. it tune eq to match among all channels.
not tried ypao rsc version yet.