To all in this thread that have help me I thank you all. Now I finally know if my Diablo is powerful enough.
Short answer is YES!
My ear tolerance level is Turbo at 1-2 o clock. 12 oclock again is comfortable.
First impressions.
But sound quality the first 10minutes. Not as bright with Arya, a little better lowend. I guess I have the same problem I had with Arya. After buying Forza Audioworks cable it opened the soundstage more.
It feels like these stock cables from HifiMAN sounds centered and warmer. I like bright and wide, so I guess TT2 was a great choise for the Susvara after all.
I switched to Forza Audioworks, it does feel a little seperated/spacious. The Music feels more in the head vs Arya which has much more soundstage.....hmmm its like it has a certain Susvara box(room).
This is interesting. Susvara sounds like it owns the music...or laidback as I hear alot. Relaxed. "Bring the music, its easy"
I hear I see this Susvara room, the box, the soundstage. It puts me in this room. I hear the vintage, I hear the organic sound, there is a certain signature. I think I will be able to tell them in a blindtest.
...But the Susvara catch me by surprise on certain tracks. It is 100% different than Arya. 1000%.
Back to iFi Diablo. Now I understand that the treble "harshness/distortion" or this attempt to sound warm kinda thing(mid-high)...is not Diablo, its the Arya. Diablo only needs to find the sweetspot(volume imbalance) on the volume knob.
Diablo sounds amazing, even on Turbo/SE. Damn what to expect with 4.4 balanced. WOW!...Forza Audioworks(Claire Mk2) ordered for this.
Thank you all! They are very close to what I expected = Goosebumps!
EDIT: This stock cables are an embarrasement. I rather se no included cable. Its a scar to see these "waterhoes" "tubes"
I always touch the diablo to see if it gets warm. It never does with Arya, but with Susvara ooo yeah! So I see the discussion now about power, it needs alot of headroom of power to keep cold as with Arya.
EDIT2:
Switched back to Arya. Yeah I don´t hear that "room", it sounds uncontrolled, has that harsness/distortion to them. Susvara is like I hear the movement of the musicians arm, 'I feel like I am sitting and hear them play in the same room.
Its like the vibe from the Akai MPC60, the vintage sound, the swing. Susvara does something good its still hard to tell from my 1hour of listening(burn-in)
The Arya V2 sounds generic. Susvara sounds like Susvara....I don´t know how to say this, even thoug I still like the Arya v2...oh and the diablo is cold as ice with arya on turbo
The lowend on Arya sound more "powdered sugar" rounded of. The Sus is more creamy/thick