Octave V80 vs Cayin M-845i

I am currently using a Octave V80 with Super Black Box to drive my PMC LB1i.
Being tempted by the sound come out from 300b+845 machine, I am thinking of would Cayin M-845i will be a better amp when compare with Octave?

My concern is will Cayin M-845i able to outclass Octave V80, Super Black Box combo in terms of musical, sound stage, definition and control?