Hey Quailpark,
thanks for your input! I bought this and another one (both C3 version) ~1990, & used them as strapped monoblocks for a few years, but was never really wowed by them at that time (I had many other amps before and after the Dynas that did wow me, FWIW), however I never really made the effort to match them to the right speakers, so I will keep an open mind. Sold one of them years ago and now finally have time to completely rebuild the one I kept. I'm waiting for the pollen season to abate so I can finish repainting both the power and the remaining output transformer. The power tranformer had been externally "potted" and was a bear to clean up! I will lose the 16 ohm speaker output (but keep the feedback connection) and will check all the resistors as I replace all the board caps with better ones. It's a slow process, but it's one that will, I hope have results that are exceptionally good sounding with my DIY Lii F15 OB speakers.