Momentum M400MxV

Well my amps are back in my set-up after the MxV upgrade. Just running some playlists through them now. Sounds pretty good.

That's great!

Love the Dags. It's the only amp I've had that my wife actually liked the look of.

Look forward to your impressions Jim!

I have spent more than a few hours over the past several days listening to the updated Momentum M-400 MxV’s as they break-in. Bottom line they have taken what I considered a very fine set-up to a new level. The very first thing that jumped out at me was the meat in the lower registers. One of my favorite tracks is “Defiant” on the Vanished Garden album by Charles Lloyd and Lucinda Williams. The track now sounds so much better. The bass, the drums, the sax all flow much easier.

Even the well recorded “Live” album by Alison Krauss and Union Station benefits from the upgrade. I almost jumped out of my seat when the drum kicked in on “Sort of Revolution” by Fink. I don’t recall the soundstage being so large on that track. Maybe I overlooked it in the past but I can really hear Sting’s fingers as he plays “Fields of Gold” from his My Songs Version.

All vocals seem “cleaner” for want of a better term, both male such as James Gray’s “Last Summer” or female with Joni Mitchell on “The Magdalene Laundries “.

Bottom line it’s just more musical in every aspect. Can’t wait to hear more.

For those who commented on the time required to turn these units around you may want to read this article I found online. I didn’t know this upgrade was so all encompassing.

Momentum S250 MxV Amplifier from Dan D'Agostino | Review - Part-Time Audiophile

congrats to the upgrade!
I do know the momentums very vell, both the older and upgraded version. the older was good but never really fascinated me....while the upgraded is mind boggling.
Well worth the high cost imho and wish you all the best with them.