Dan D'Agostino Momentum amplifier- which preamp?

I know CKKeung on WBF runs an ARC Ref 40th Anniversary preamp successfully with his MC2 S1400 mono's. They're pro amps, so I'd expect them to be fairly neutral. The Ref 40 pre is very nice if you can find one.

Audio Research Ref 5se is a great combo with Dag amps. Tested them in house. Best of tubes and solid state.

Anyone run Dan's amp(s) with a tube preamp?

I know an audiophile drove his Momentum Mono with ARC Ref5SE. It sounds very good but impedance not perfect match.

First your Aviors are fantastic speakers. I assume you have them properly set up and your room treated if necessary?

I've heard my dealers Aviors with a Nagra Jazz tube pre and a Nagra Classic (ss) amp. Absolutely fantastic. Transparent cabling.

My Rockport Altairs sing with my Robert Koda K10 and Ayre MXR's. Again Transparent cabling.

Not sure what cabling you're using...but this maybe be a key ingredient with your Rockports...

Aldenberry-

another + vote for the ARC Ref5 SE. Make certain that you are using Transparent cables and Power Cords!

Keep me posted & Happy Listening!