Not sure I agree with your "conclusion it must be the amplification" (without having seen your room, that is).
If you are mixing audio and video and your speakers are flanking a reflective screen and placement dictated by "where the screen is" (not to mention what your wife thinks) then changes in amplification might be dwarfed by bad room placement and lack of room treatment.
I would keep everything the way it is and borrow a better amp before spending your own money.
If you are mixing audio and video and your speakers are flanking a reflective screen and placement dictated by "where the screen is" (not to mention what your wife thinks) then changes in amplification might be dwarfed by bad room placement and lack of room treatment.
I would keep everything the way it is and borrow a better amp before spending your own money.