Sub for Sonus Faber Guarneri Homage


Hi!
I'm thinking of getting a Sub to complement my SF Guarneri just for music (not movies);
At the moment i have a Audio aero capitole cdp+pre which feeds a Pass Aleph 3. I'm also planning to substitute the Pass with a couple of 300B monoblocks at some moment.
I have a few doubts and wonder if you could help:
- is it worth it to have a Sub for just music?
- can i just drive sub from preamp output and do any filtering on sub (or would i need special processor)?
- any product suggestions?
Thanks!
dongiovanni
The Wilson Benesch is the only powered sub I've ever heard that sounded organic, like music does.
I did use a Whise 319A sub (Australian) with my Guarneri's and it mated extremely well. It is a large beast, but highly musical. I did try the Rel but preffered the Whise which could keep up with it.

Also during that period the Wilson Benesch was not around, but I would certainly see that as a good option, reading all the reports.

Cheers,

Neville
Thank you all for the help; Wilson Benesch must be the best, the problem is that it's outside my budget...
I finally went for a sonus faber gravis which I got with huge discount and am waiting to arrive and will connect through amp outputs; dealer gives me possibility that if doesn't fit my guarneri i can change for a REL Britannia R3 (for $500 more).
Thanks again,