D’Agostino Momentum stereo vs D’Agostino Progression Stereo Amp

Blue sky:
I idid perform the exact comparison you are asking...at Audio Element in Pasadena, CA, I critically evaluated the Ayre Mx-R 20 mono blocks and compared them vs the D'ag Progression Stereo, vs the D'ag Momentum stereo...I thought the Ayre and Progession were pretty close, but preferred the D'ag, but felt the Momentum Stereo S-250 was in a different and better place, and ended up purchasing a new D'Ag Momentum Stereo, which significantly bettered the Hegel H-30 stereo amp it was replacing. I am really enjoying the D'ag, using the VTL 6.5 ii tubed pre, it makes for a wonderful combo...some also use it with the ARC 6 or 10 preamp...all good choices, but as mentioned above, you need to audition with your gear, and your ears, and wallet, and make the choice that works best for you. I am now very happy with my gear, and just enjoying the music. By the way, no reliability issues, and it looks as good as it sounds
Best,
Bob

Well Dan's equipment sounded excellent to me at Axpona this year.
It did not blow up as did the company's new product next door.
Not going to mention any names. (Remember Noah?)

I probably cannot provide you with information as relevant as Mribob, but for what is worth, I purchased a used Dag Momentum integrated to replace my excellent Accuphase E550 and realized a vastly deeper soundstage as well as a cleaner and finer-grained audio with my Sonus Faber Amati Anniveraries.  The sound is more relaxed, transients seem faster and is more transparent with more "air" around the instruments. I expected the bass to be "tighter" as well with the far greater Dag current, but this was the one disappointment although I am still satisfied with the bass. In all, I am very satisfied with the equipment and have had no reliability issues to date.   This is the only comparison I can provide. As far as Dan Dagnostino is concerned, I called the company to ask questions regarding power cords and interconnects. I was told that I would receive a call back the following day. I did, from Dan himself, who was willing to spend all the time I needed for my questions even though he knew I purchased the Momentum used. He invited me to call any time. Says much about the man and his company in my opinion.

That seems all good news guys, apparently Dan is more accessible and concerned then 30 years ago and the top product seems indeed to be just that then, no matter if it is smaller!
I look forward to hearing it! So far I just had the occassion to listen to the Progression Stereo at a high end show, but as you can imagine the big room was crowded, and speakers were great but a bit small for the room, so the impression was one that left me curious for more under better circumstances.

Would a highly transparent transistor pre (Halcro) work well, or are tubes more recommended. I will have to struggle for funds as is to get the power amp, so a D agostino pre is out of the picture atm...