Gryphon Diablo 300 vs Vitus RI-101

@btbluesky  

Your current PS Audio DirectStream DAC, PS Audio BHK preamp & Parasound Halo JC1 monoblock amps are fine and good enough for your Focal Sopra 2. The Parasound Halo JC1 is on a fuller warmer side of neutral and I think is a good match for your Focal Sopra 2 speakers since the Focal is an analytical sounding speakers and would be better off with a full warmer sounding amp & preamp like the Parasound Halo JC1 and the PS Audio BHK preamp, which is a hybrid design with tube input & SS output stages.

But that being said, between the Gryphon Diablo 300 & Vitus RI-101 if I were you I would probably go with the Vitus for the Focal Sopra since the Focal is analytical sounding speaker and the Gryphon Diablo is somewhat neutral whereas Vitus in general imo would have more fuller warmer sound in comparison to the Gryphon. So I think the Vitus would be better match for your Focal Sopra speakers.  

I would pair your Focal Sopra speakers with full warm sounding electronics If I were you.

Other electronics that will be a great match for your Focal speakers is Naim Audio. Look for some Naim separates. But if you go with Naim, you will have to go all the way Naim, starting from a digital front end source component (Naim digital streamer/DAC), linestage analog preamp & power amp. 
If you decide to go with Naim electronics I highly recommend that you use Naim's proprietary DIN connections (DIN cables) to connect between Naim components or electronics in order to optimize sound quality and will sound quite a bit better than using its RCA connections (cables) to connect between Naim electronics. Naim always highly recommends using its proprietary DIN connections. That's why you will have to all the way Naim using Naim streamer/DAC, preamp & amp and use DIN. DIN is basically a Naim's simplified version of XLR balanced analog audio connectors. 

Naim makes excellent highly musical sounding streamer/DAC especially their ND 555 streamer/DAC paired with external 555 PS DR external power supply unit. They are expensive though. 

Naim electronics sounding full body, warm (I would characterize it as intoxicated warmth not like tubey syrupy type of warmth) very natural organic sound yet excel in PRAT without straining or sounded forced. Very rhythmic with great pace speed & timing and has musical drive. very musically engaging and involving. 
I highly recommend Naim separates for your Focal Sopra 2. Actually your Focal Sopra 2 were voiced and tuned using Naim electronics since the Focal and Naim merged some few years ago. They would have good synergy together.

@caphill 
Thanks for the suggestions. I actually was looking at naim, as I know sopra was voiced with them. But their 500 amp (never mind their statement stuff) is pretty pricy, plus they really have no present in US, and nobody have their gears.
The other made-in-US option I think is good would be pass labs, maybe their x260.8.... 

hello; I currently have Focal Sopra 2; I have a PS Audio Directstream (had the A21 Halo/JC2 combo, BHK and also LS27 so similar hardware experience as you) and currently run a luxman m900u amp (c900u preamp inbound); Previous to the Sopra 2’s I had Dynaudio Contour 60s; The Lux has a very "alive" and very transparent presence about it;
I personally do not like the synergy with the Sopra 2 and will be moving on from the Focals; With the Contour 60’s the tone and overall sound quality was far superior to my ears; I did a ton of research about the Gryphon Diablo 300 (was very close to acquiring) and, on paper, it seems the Focal synergy would be better, or perhaps the Luxman 590 AXii Class A integrated.

One thing I noted with the Sopra 2’s; I was surprised to find them about as efficient as my DYn 60’s; on paper that should not have been, but it’s what i’m experiencing. It actually seems that they like MORE power than the 60’s; go figure.

I would include the class A stuff from Pass Labs in your hunt; I had an XA30.5 and it was a wonderful amp on the Dyn 60’s. a velvety beautiful mid-range excellent dimensional aspects, sweet treble, that I think would have been a better match on the Sopra 2s; With the DSD/BHK and a Pass XA30.8 I think there is potentially excellent synergy;
You did mention 260.8 monoblocks, and they have about 35watts in class A, so that might be better...you already have monos, so you probably have stands too :)

I have only read this, and so it’s mere conjecture, but Naim might be too thin with the Sopra 2’s.
Another up and comer to check out would be the Hegel H590. Reported to be very powerful and smooth, yet highly resolving.

Please describe your acoustic and music characteristics; Room dimensions, listening position, spacing, damping (bare walls/floor heavy carpet...), genre of music, preferred listening volume...etc.

Also, what cables are you using, IC's, speakers, power?
Have fun!

@btbluesky

. So I figure to get the best out of this chain is the fastest neutral amp I can get my hands on

For giggles, why not try for FREE the Benchmark AHB2. They have a 30 day trial period. You would likely need 2 of them to run in mono mode. FREE only costs you your time. Each amp is $3K.

Stereophile reviewer is going to review the Kaya 45 with these amps (amongst others). These amps are fast and have no voice other than sheer silence. I owned them and if my next speakers are not bright I will have these amps to rotate in.

BTW - BHK did some tests on the AHB2 for some magazine and he said he had never measured an amp this quiet. Link is on the Benchmark web site.

@yyzsantabarbara 2 years ago I had the AHB2 with Dyn Contour S3.4 Le's and was initially impressed by the little amp, but overtime grew to dislike the sound; super duper detailed ...to a fault in my mind; There was something very odd about the presentation overall and I felt like I could not connect to the music. Not sure what it was, as I really wanted to like it but was easy enough to send back. Benchmark is a wonderful company.
Oh ya, the amp also ran out of headroom quickly; Having Sopra 2's which, to my ears are much more forward in the presence region than any Dyn I have ever heard, IMHO, I think that synergy might not be the best.