Douk Audio G4 as summed channel amp driving a single speaker?

[Humanfly]

Will the Douk Audio G4 subwoofer full frequency mono channel amp work to sum both input channels and output to a single centre channel speaker to be used in a single speaker setup?

Amazon.com

 

[Humanfly]

Kindly ignore question that was resolved with a cursory look at the amps specs.

However....... is there a cost effective D class amp that can do the same task? I have a centre channel speaker that I could/would like to utilise as a single speaker if at all possible. Cheers