I purchased an XP-10 about 4 months ago. It sounded fine and I like it. But, recently it has started to exhibit and irritating behavior. With Piano 1/preset:001 selected, the top octave has developed a "crystally" extra bright after sound. It isn't affected by the key velocity either. The guy at Roland told me to re-initialize to factory settings. That didn't help. I have found another person in another users group who is getting the same effect on his XP-10. I don't think its my amplifier either since I can hear the same thing in the headphones. Has anyone run across this? If yes, what was the remedy. It can be quite irritating at times.

Thank you in advance
Pierre

I don't know what the problem is but I was reading user reviews about the xp-60 at harmony-central.com and one gentleman seemed quite irate over a similar problem with his xp-60.