Is there a pre-amp not processor with a sub out?

If a pre/pro is off limits, then look for a preamp that has two sets of main outs. Some will have 1 pair of XLR and another RCA.

I'm using a Primare P30 pre/pro and it is sonically superior to some 2-channel preamps in direct a/b comparisons in my home. One of which is highly rated as a class a preamp in Stereophile (not that that means anything).

Nevertheless, I'm using the RCA main outs for the sub and the XLR for the amp.

You could use Y-connectors but you always take the risk of degrading the signal.

Thanks for all the advice. But hold on, I didn't know there was a (Stereophile) Class "A" pre-pro out there for under 5K. That would really solve my problem.

... Is the pro side Class "A" or only the pre-amp side?

Sorry, Funkydog. I missed your post. If you look closely at my post above, it clearly stated class A preamp.

Better late than never.

check out the B&K PT-3, it also has a built in tuner.