preamps that have sub connection ?

I am looking for a solid state preamp that has a dedicated sub out,I know that anthem has one, I was wondering if there are others, thanks
B&K PT3II has a Subwoofer out connection.
Just about all home theater pre's have a "sub-out". Just about no 2ch pre's will have a sub out. Most 2ch pre's have an extra set of "main-outs".(but no crossover)
Actually, you can use the recording loop in just about any preamp to run your sub.
As long as the sub has line-in and line-out connections.