http://ratsound.com/cblog/archives/326-Seeing-Things-As-They-Really-Are.html
or
For the short version, they could not detect an audible difference,
BUT they did find, hooking clock gens up to a scope, that the Yamaha
had the ugliest clock signal (lots of smear) of anything they could
get their hands on, including "the oldest 'least likely to have a
decent word clock' piece of gear we can find at the shop, a Tascam
DA98 digital recorder."
He admits that it's anything but conclusive, or super scientific, but
it's the closest I've seen yet, and certainly interesting!
--A
My point wasn't to question those who have stated they hear a
difference, but to offer the actual evidence of why. It unfortunately
happens that the guy who investigated and posted that evidence didn't
hear the difference, but A)that's a bunch of guys who've been mixing
loud rock for years, and B)it's an M7.
I would love to see scopes of the rest of the Yamaha line, now,
however...this certainly piqued my interest to see just how crappy the
M7's was, and I'm curious how it translates. But, agreed, the M7 is
definitely my least favorite of any of the current Yamaha line in
terms of sound, particularly on an internal clock.
--A