Currently Av123 is sold out of this product until mid-July. I have one and am selling to raise some HT funds. It is in mint condition and includes orginal packing, cables, software etc....just like new. R-DES is a device that sits in front of your subwoofer that allows you to compensate for the degrading effects that the room has on your subwoofer’s response. Ideally, you want your sub to produce a flat frequency response so that all bass sounds are heard evenly and at the same volume. This is the most natural and accurate way that bass is reproduced. RDES can help achieve this “ideal” situation....think of it as an automated equilizer. For much more info on this product....Here is a link to their page: http://www.av123.com/products_produ...rs&product=31.1 THIS UNIT HAS BEEN SOLD-THANKS MIKE Ron Boster PS: Long time member here, AVS and DVDtalk. ebay name rwboster.