Vitus sia 025 vs d'agostino momentum


Hi everyone
i need some advice on this one. I have devialet 400 monos and I’m looking to get an integrated amp. I have narrowed the search to vitus sia 025 and d’agostino momentum amps. I am hoping to get advice on choosing between these two items.
My system
focal Scala v2
2 REL g1 subs
brinkmann balance tt
brinkmann 12.1 tonearm
benz lps
shunyata triton/typhon
transparent reference cables
audio alchemy phono
dsc rossini
The reason for the change in amps that I feel that the devialets lack any depth to the soundstage and my system is too technical. I have heard these amps and they seem to add better scale to the soundstage and a more tube like sound
any suggestions?
thanks in advance
chris
cmanios
Forgot to say...
i have an aurender x100, lampizator golden gate 7, gryphon Diablo 300, and until recently focal scala utopia v2
Happy listening!
Leonard
in Scotland
One issue with the excellent Vitus amps was that they need to be left powered up as they take 3 to 4 days to reach their transparent sound
my Diablo 300 takes 30 minutes although I do leave it on standby

Have heard the beautiful d'agostino with Magico speakers
Impressive but bass less warm than the Scala v2 or my current Zingalis client name 3.12

hope this rambling is of some help or interest

Leonard
Thanks Leonard 
i have been reading about gryphon but there is no dealer in the US. I want an amp that is great with soundstage and gives the music depth. I felt that the momentum were great but a little too rounded and maybe a little too smooth like an overly sugary hot chocolate. The vitus seems to be more organic to my ears maybe not as creamy. Hope this makes sense
cmanios,

If you want to give the D'Agostinos a go in your system, let me know. Of course I'm biased, but if there's anything you will NOT find on Dan's latest is fatigue! 
With our YGs, the depth with the Momentum is unbelievable. Truly a walk-in soundstage.
So, if you want to give it a go, give us a call or email!



Disclaimer: dealer in San Diego, CA (http://almaaudio.com)

Leo,

How would you describe the sonic differences between the Vitus and Diablo?