After reading saint.panda's definitions and acs236 remarks, I need to retract my statement that the 595 is grainy - and I aplogize for any confusion. There are so many qualities to the sound that many times my command of the English language just simply comes up short in expressing it.
I think acs236s remarks hit the nail on the head, and if not, come as close to it as I've read. What bothers me about the 595 is that the sound is congested. Yes, I agree with spike and andrea that the midrange is lush and full - but I feel this way only when I analyze the midrange tonal balance and pull it out of the rest of what the phone is doing. I think the presentation itself can sound hollow - in that the individual notes don't carry as much 3D weight as the other phones. So take this property, and throw in the scrunching of midrange presentation, and you have what motiviated their exit from my collection.
On an extended note, in grasping for a reason why we agree\disagree to the sounds that these cans produce, take a look at some other terms in addition to the 'graniness' term that started this thread:
- soundstaging
- imaging
- tonal balance
- weight
- liquidity
- articulation
- space between the notes
Each of us will prioritize the importance of these dimensions, and in addition, each of us will have a threshold of performance that we deem acceptable, allowing us to move on to the 2nd-most important dimension. For example, I believe the quality I most need in a phone is the articulation, and space between the notes. This is where the 595 comes up short for me. However, once this quality meets my threshold of 'yeah that's what I need', I move on to others. So looking at my top priority alone, the HD650 should be my top pick, but becuase the 880 is good enough and comes up stronger in other areas, I prefer it more. Or so this is how I think my unconscious is working...
Again, bear with my limited range of expression.