I'm currently using a Sherwood SS S-9500c 20 watts rms per channel. 1st gen ss integrated from Sherwood and the smallest of the 3 from that period. It has sidelined my McIntosh and Philips systems and is the 1st amp that I can really enjoy my Klipsch Heresys with. Also, have a nice Sony TA-5055, much newer and though same power range whereas the Sherwood evokes totl quality, the Sony obviously is made to a lower end price point. Does not have as much power subjectively but sonically is quite nice and really enjoy it.
I have a pair of Yamaha CA-610IIs that look very impressive, meters, lots of controls, but, sonically lacking in comparison to the Sherwood and the Sony.