Gryphon Diablo 300 vs Vitus RI-101

btbluesky OP
George, that was actually pretty useful information with your mate’s Wilson.
Now, the fact that we are talking about the Alexia, its an extremely difficult load for any amp. The focal sopra 2 on the other hand is very easy load.

The Sopra’s are efficient BT, and only needs 100w, but they are a very hard load in the bass, the JC1"s from what you’ve mentioned in sound charater so far is the best for them. read below.

Stereophile
The Focal will play loudly when fed only a few watts, my estimate of its voltage sensitivity being 89.2dB/2.83V/m.
However, as fig.1 shows, the Sopra No.3 is a difficult load for an amplifier to drive, with a minimum magnitude of 2.75 ohms at 96Hz and a combination of 4 ohms and a –56° electrical phase angle at 68Hz, both frequencies where music can have high levels of energy.
https://www.stereophile.com/images/417FSop3fig1.jpg
Do you get it now??

I LOVE my JC1, but I am not sure its the end game type of amp. Otherwise stereophiles Michael Fremer would be rocking them, instead of a pair of dartzeel monoblocs (~$150000).

So if you have the $$$$ get the Gryphon Antillion it will be a logical upgrade, the Gryphon Diablo 300 vs Vitus RI-101 are great amps, but into this kind of load, are sidways or maybe a backward step. The JC1’s are the go or the Antillion if you realy feel the need to upgrade.

Cheers George

Don’t listen to the clown above suggesting tubes for these speakers, he has no idea.
A tube into this kind of load will have a lean bass (unless it has a 2ohm tap) and an exaggerated treble.

Stereophile
Because the magnitude is considerably higher in the treble, the speaker will sound brighter when driven by tubed amplifiers

Cheers George

OP I think your instincts are spot on and you should investigate on your own rather than take the advice offered above. 

They always sound better if they cost more.

They always sound better if they cost more.

I think most audiophiles do not believe this. I wouldn’t have gotten the JC1 if that were the case. If there are other int_amp/amp you believe can best these brands, please share.
The JC1 has 132000 microfarad cap reserve (at each side), and can do 135 amp peak, with damping factor > 1200. 25w of class A (at 8 ohm, so prob 50w at 4 ohm) to start, going 1200w stable at 2 ohm. If you have electrostatic, this is the top amp without equal I believe.

But there are different aspects of performance I’d like to explore. The grain free texture in high and mid, the soundstage, the immediacy related to PRAT. A burmester 911 has 160000 μF caps, and has damping factor> 10000 supposedly. Soulution 711 has 1,000,000 μF cap reserve. Same thing with the Vitus... so I just want to explore more with these brands by getting their entry level gears. And these are within the price range.

Personally I do not think Levinson amp being so much more expensive, is worth it for example. I have nothing against them, I just do not ascribe to their corporate believes.