Sirspeedy, Yes I have a mp3 player and it sounds fantastic for what it is but it would NEVER replace a good home stereo.
I started in the early 70's buying what I could afford and always, to the chagrin of my S/O, had a significant amount of money invested in ''hi-fi'' equipment. That's what lead me to REL. Trying to put together a great system and since there's is a complete lack of hi-fi shops around now, my only choice was to read and study online forums and reviews. Everything I read about the REL was positive. But after bringing it home and hooking it up I thought in the back of my mind I could have done better for that significant amount of money. It sounded OK with music but when i did play the occasional movie it did not keep up with the soundtrack of action movies. It would "bottom" out and did not have the output I was looking for but since I bought this sub primarily for music I kept it and made do.
I guess in conclusion since I never really was satisfied to begin with when I found out that it was going to take that much money to fix it lead me to where I am today. I still think Sumiko just charged me the handling fee and didn't even try to fix it since they couldn't even give an idea what was wrong with it just that it looked "stressed". Not very good public relations. That and nobody would ever call me back after I left a voice mail. I would never buy any of the products they deal with again and I'm still without a sub.