Vitus sia 025 vs d'agostino momentum

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)

leo6473 posts07-02-2016 5:35pmDodo try the gryphon Diablo 300
i swapped my Vitus sai025 for one
chalk and cheese imho
leonard

How exactly is it chalk and cheese? The EU price certainly doesn’t suggest so. The Diablo 300 is €17,600, whilst the SIA-025 is €21,000. Both amps are high bias Kl.A/B amps, dual mono with wide bandwidth and ZNF. But there are fundamental differences in the PSU’s. Vitus are using a special UI-core transformer which took 8 years to develop which is extremely efficient & sounds especially liquid/tube-like. The current SIA-025 is outputting 25 watts Kl.A & 150 watts Kl.A/B @8ohms, but Vitus’s power specs are ridiculously conservative. My slightly older SIA-025 outputs 100 watts Kl.A/B and controlled my Magico S5’s in my medium size room without breaking a sweat.

leo6473 posts07-02-2016 5:44pmOne 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

Maybe stone cold out of the box, but here is what Chris Thomas said in his review of the SIA-025 for Hifi Plus "From stand-by, straight into class A I would say that you are looking at a half hour before it really begins to sing and then it just seems to keep getting better. Even after a solid afternoon and evening’s listening I would swear that the amplifier was growing more fluid, textural and resolute with better dynamic contrasts, tonal shading and the delicacy of its musical message just seems to become more profound." No mention of 3 to 4 days because that is absurd. And I own an SIA-025, so I know from whence I speak.

After owning several excellent high end amps and now the momentum I would say that at this level another amp, in this case Vitus, might sound a little different but better is unlikely. Just different.. Would feel the same way if you reversed the question. At the top level IMO it's a matter of nuance. Listening to a Krell Chorus amp right now and couldn't really say what change in sound I might want. IMO again, high end gear is just really good nowadays.