Trelja, I thought I'd chime in my two cents worth. I'm not sure to what degree my experience with my Cambridge cd4se is relevant to your d500se, but it might be. The sound improved noticeably on my player when I installed it on top of a sand box isolation platform and then put a one gallon baggie with three lbs. of sand on the top (transport side.) Also, a REALLY big improvement was manifest after reversing the plug polarity. After checking the chassis voltage with a multimeter I found it lower with the plug polarity reversed. Bass definition and clarity were especially improved. Keep us posted, Will.
