Good morning, SHXMD.
I think you'll probably get more responses if you post your question in the Tube-o-phile Circle.
If the folks at Bryston don't mind my answering your question here, I'd like to recommend you take a look at the Don Sachs Model 2 6SN7 preamp. It pairs well with both SS and tube amps; throws a deep soundstage, and does a great job with separation of instruments and vocals. I'm very biased toward D Sachs preamps - I own two of them.
[To Bryston admins: If my response in this Circle is inappropriate, please inform me, and I will delete it.]
Regards,
Michael