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Originally Posted by SteenWinther /img/forum/go_quote.gif
ADD - Are you sure that you have not been listening to a faulty pair of HD595s? I agree that the tonality of individual instruments are inferior to that presented by the HD650s, but to suggest that HD595 responds poorly to Dolby Headphone is very strange.
I find a huge sound stage depth with HD595 and Dolby Headphone (via PowerDVD), and at a same time the overall sound becomes much warmer and treble details are noticeably attenuated - which probably is an advantage for the 595s relative harsh midtone?
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I doubt they were faulty. I bought them brand new and gave them 30 hours continuous burning-in before making any judgement (I then sold them to a fellow head-fier who unfortunately was no more impressed with them than I was).
I can't really agree with the stage depth of the HD595 with dolby headphone - I find the HD580 and HD555 do it far better. With dolby headphone, I found the HD595 stage to be excessively wide (as in first violins 89 degrees to my left and cellos about 100 degrees to my right. And the woodwinds and violas, for instance were not far enough back in the orchestra. I described it as having the depth of a photograph - an exaggeration perhaps, but in relative terms to the HD555 and HD580 I find there is no contest at all. The HD595 still sound like headphones but the HD555 sounds more like a pair of $500 stand mount speakers and the HD580 like a $2000 pair of stand mount speakers - everything is in the right place and at the right depth - the woodwinds are right near the back of the listening room, the timpani right at the back towards the left, the violas correctly positioned and the first violins about 50 degrees to my left instead of directly to my left as it was with the HD595.
As far as the treble attenuation is concerned, the extreme highs don't seem to be there at all in the HD595 - to me it is just grain everywhere from the high midrange to the top end of the audible spectrum. The HD555 is much more open and has much less grain, but the sacrifice is in the detail, which admittedly the HD595 has. I suspect though that if the HD650 is anything remotely like my HD580, then it would have all the detail with absolutely no graininess at all.
I just found it incredibly tiring to listen to the HD595 at all, because I know exactly what the timbres of orchestral instruments are supposed to sound like, but my brain is working overtime trying to reconcile the differences between real life and what actually comes out of the headphones.
I guess different listeners have different priorities. I want accurate timbre and a near-perfect soundstage above almost everything else and whilst the HD595 had certain strengths, I did not consider them nearly as important as it's weaknesses.