+1 on the Octave. Never owned one but I spent some time and their room at the RMAF with Dynaudio speakers and it was impressive. A modest display that sound everything but modest.
If you are open minded you might check out the Rogue Audio Pharaoh II. Tube/Hypex hybrid. Good bang for your buck gear with solid service and support, in my experience. No experience with this particular product but I have ran tube pre’s with class D amps with good success.
Also audition a Hegel Rost in my rig that was impressive. Would considered their integrated products anytime.