Can someone please help w/ Revel B15 setup?

I have the M20s and the B15 that a friend wants to sell set up in my living room. I've hooked them up to my current reference system using a Classe Six preamp and Levinson 23.5 amp. WOW! very impressive. The guy also let me take home his Levinson 383 that he had used with the M20s. I am considering buying all his gear for another system. I was wondering if there is any way to use the 383 with the B15, since there is no "pre out" on this integrated amp.

I could use the B15 and the M20s with my Melos SHA-1 preamp and a Levinson 27.5 if need be. The other major concern would be the need for 2 long interconnect runs of ten feet or more so the B15 can be placed in a corner like the instructions state. It seems to me that such long runs and the need to have two sets of interconnects and a subwoofer's electronics in the path between the amp and preamp would be deleterious to the sound. Not only that, but it will be deleterious to the wallet!! It would cost big bucks for 20 ft. of quality ICs. I was thinking of trying Signal Cable's Silver Resolutions which could be bought for around $600 for two 10 foot pairs. Ar least you get the option of returning them in 30 days if you don't like the sound. I would have to use a single-ended cable from the Melos to the sub, but I could run balanced from the sub to the ML 23.5.

Any thoughts from those with experience are appreciated.