VITUS Ri-101 & NAIM uniti Nova no louder, WHAT AM I MISSING?

Greeting audio Gurus from the Left coast!

I Recently got a Naim Unity NOVA  (80 Wpc) 
realy realy love the sound and operation/ convenience of this heavy little gem! 

HOWEVER (of course) .. I find myself listening regularly at an average of  %50 on the volume dial!! and when I really get into some tunes I'm up near %70 ish!!! on the dial.. if i realy really get into it I think I am in danger of maxing it out and sound deterioration.  and loosing any headroom or reserve power.
 

SOOooo... wanting much more power, volume, headroom and reserve power, I found a good deal on a Vitus RI-101 integrated. (300 wpc @ 8ohm, 600 4ohm,  Class "A" up to 12 wpc) Good unit! 

Now with everything hooked up and configured correctly (I THINK), Sound is definantly  "better" BUT why am I still listening at the same 50% ish volume levels?  and still want to crank it up to the previous 60- 70% levels?? 

All level are about 60- 75 DB average on sound level app
and using HSU VTF sub @ low levels

The Vitus I think is in bypass (volume locked out @ 0.0 )
connected Via RCA's (no balanced xlr on the Naim)
I don't believe I am getting the full power of this amp, and missing "something" but i cant figure it out on my own,   
WHAT an I missing?

Thank you for any assistance! 
*like how I use PARAGRAPHS" heheh J/K*