Question for Cary 306SACD owners

hi guys
my 306sacd has about 400 hrs. on it.as Jprice states i hardly notice any change while changing the upsampling rates.i am curious if 306sacd owners are hearing big changes or not
thanks
al

I bought my 306 used and it had ~300 hours on it when I got it. I really didn't hear much in the way of break-in when I put it into my system (about 9 months ago). It continues to sound great on RBCD/HDCD and SACD.

As to the filters, I almost always listem without upsampling. In that mode the signal goes through the PM200 HDCD filter which is a high quality filter. RBCD sounds really fine in that mode. I've experimented with various amount of upsampling but I don't find any of them sounding better than the 44.1 setting. Strangely, when I use 192 the sound is louder by about 1 or 2 dB. At first it seemed to sound better but I have chalked that up to it being slightly louder. Anyone else experience this?

I agree with Jprice. I find it very difficult to hear any difference between the settings. I did a double blind test with my girlfriend switching between 44.1 and 768 and I really could not tell. My hearing must be pretty bad :(