Tireguy, If your speakers are 99DB, the BEST SET I have ever heard are the Wavelength Cardinal X1's. Yes I am biased, and I have a pair for sale, cause I do not any longer have efficient enough speakers. I have had the S-30's in my system, and they were not as magical as the 300B tube. This MHO. 12.5 watts would put you in music heaven. Check out Steve Rochlins review on these amps. He compare's too the 90K onagku's.
Good luck in your search
Good luck in your search