Atlantic Technology 6200e system outdated?

I have an Atlantic Technology 6200e system that I have been trying to sell but with no luck. I'm starting to wonder if maybe this system is outdated to a point that makes it undesirable in this day in age and that is why no one is wanting to buy it. The speakers were purchased from the manufacture and were used in a showroom for display purposes only and are still in pristine condition- no flaws at all!!! Please any and all help/advice on this would be greatly appreciated on my end.