Perhaps involve the wife in choosing new colour socks to replace the black ones or consider replacing the wife.
Richard Vandersteen produces one of the best value speakers and the Model 2CE is probably the value leader. Properly set up they are convincing, outperforming many more costly alternatives.
As others have mentioned, replace the front end. Your power amp is fine, try a good tube preamp and new DAC. Think Denafrips.
This combo will enthrall you IF your room will allow. By that I mean paying attention to room treatment.
Install some bass traps, perhaps the same colour as the Vandy's new socks :) and absorbers at the first reflection points. This addition alone would transform your system and with new preamp and R2R DAC your jaw will hit the floor. Hope its carpeted.