I haven't logged in for a long while but I think the first response is a correct one. First thing is to see if its really the amps you want to change. If you decide its the amps that seem to be lacking it is unlikely on the basis of power or quality. Different solid state amps do sound differently. I have a friend who went from very high end 2000 watt monoblocks to a different set. Neither were Swiss but every bit the caliber IMO. He loved the difference - but note its the difference. Not that they are so much 'better'. He found the new amps much more detailed and 'crisp'. I inherited the old ones and they are quite wonderful, but a bit more laid back. Sometimes we just want a change. Your best bet, if you decide this route, is the audition in your system.
Power Amp suggestion
Would love to hear recommendations on replacing the power amps in my system. Current system is Roon Nucleus+ Server, Chord DAVE DAC, Audio Research Ref 6SE, Bryston 28 SST2 monoblocks, B&W 802 D3. Cables are all Synergistic Research Galileo/Atmosphere . Have not heard the Swiss uber expensive equipment but would Soulution or CH Precision make any sense?