Searching for an amp to pair with Rockport Atria II


I recently upgraded from a pair of Magico S1MKII to Rockport Atria II. I am very pleased with the move the Atria II is a more complete and “musical” listening experience. I am now looking to complete my system by upgrading from my Hegel H360 to a new amp. I have a dCS Bartok and two JL F100v2 subs in the system as well. 

I currently am auditioning the Octave HP300 and Octave RE320 with the black box. I can say that the sound stage is much more open with the Octave gear compared to the Hegel. I did try the RE320 feed directly from the Bartok and it sounded great as well. the Hp300 just opened up the stage a bit more and provided more range to the dynamics. 

I am looking for a bit of information on the Octave gear as far as reliability. There is not much out there outside of a few english language reviews. It seems like most of the reviews are out of Asia or Europe. It doesn’t seem like Octave has much market penetration here in the US.

I am open to other suggestions as well. I am enjoying the Octave so far and it seems to have more than enough power for the Rockports. I have seen a few videos with the Octave v80se driving Magico A1 and A3 so I am pretty sure it can provide the power if needed. 

Thank you for any and all advice. 
Ag insider logo xs@2xcreditingkarma
Atria I owner - currently driven by Gryphon Diablo 300 integrated amp.  600W/channel at 4 ohms.  I had the Octave V 80 (w the Black Box) initially, but would crap out at higher volumes.  Like mentioned above, it requires a lot of juice. Boulder, Pass amps as suggested will also work as well.
Try the Anthem P2 amp 500 watts at 4ohms, 675watts at 2ohms and it will go down to below 1ohm if needed without a problem $4,500. new.
Merrill Audio Mono blocks. Double down to 1600wpc at 2 ohms.
No idea if there is a budget here however but these
amp employ a technology no one uses yet. Read up.