I actually decided to go with the 500's already. But as I noticed there at the store already, the piano sound is mellower and has more bass notes to it, so no suprise here. What I cannot now test out is that do I actually feel the sound is still more real than on the 325is'. But don't get me wrong, as I'm here listening to music and burning these babies in I'm enjoying every note I hear.. so for me the 500's fit better for the music, but if it would be a perfect world I would have kep the 325is for my digital piano alone. But I can't quite say that money wouldn't be an issue as having the two now was never a possibility for me at this stage. If I would have ended up paying more for the 500's than if I'd pick them up straight away two weeks ago already then money might have been issue for me at this stage.
Although I might think that as these 500's are a bit too soft for my DP, the 325is might have been a bit too bright though still I think preferred them on it. Actually when I originally got my digital piano while back I found the sound to be a bit too soft and lacking mids, but in time learned to like it. So maybe 325is where something I hoped for the sound to be in the first place. And as it is a digital device there's no saying that the audio equipment on it would produce the sound they should, or that even they'd be fully burn in themselves. But maybe I can test out 60i's etc. and see how they would fit the sound on my DP.
The sound is more real on the PS500s is due to a larger soundstage effect. There is echoing effect were on the 325is , the sound comes in fast and ends fast. It is like listening next to the source vs 10 feet farther were the sound hit and reflected back from everypart of the wall and back to the listener.
Have you tried the RS2i. ? Maybe this is what you are looking for? Pretty close to the 325is with just a smooth MiDS and highs and decent bass. Mids and highs are still intimate but bettter soundstage than 325is. Like the SR325is the Rs2i bass will not over power both mids and highs.
Edited by Awgd8 - 11/5/12 at 9:55am