Agreed with the prior post about
(A) not doing it yourself.
(B) do not simply hardwire a thicker gauge cable; use a quality female plug to facilitate the attachment of a quality external power cable.
(C) replace the crap wall plugs with (at a minimum) hospital grade wall receptacles.
(D) a dedicated power line to the breaker box is the logical extension of this (eventually).
Without prejudice to (a) and (b) above, Not sure whether the cost / reward on your receiver will pan out for you. I would have the qualified technician assess it for before you jump in.
Good luck
(A) not doing it yourself.
(B) do not simply hardwire a thicker gauge cable; use a quality female plug to facilitate the attachment of a quality external power cable.
(C) replace the crap wall plugs with (at a minimum) hospital grade wall receptacles.
(D) a dedicated power line to the breaker box is the logical extension of this (eventually).
Without prejudice to (a) and (b) above, Not sure whether the cost / reward on your receiver will pan out for you. I would have the qualified technician assess it for before you jump in.
Good luck