An utterly refined and relatively understated power amplifier. Sadly Sansui decided to fit a conventional power transformer instead of a toroidal one. This makes the BA-F1 lack impulse power to drive difficult loads, but combined with a set of high efficiency (Tannoy) speakers, this is breathtakingly beautiful.
This unit is fully recapped and the thermal sensing transistor is moved to the top of the heatsinks. Oddly enough originally this sensing transistor is placed at the bottom of the heatsinks, where they are coolest. This means the unit can run hot if driven hard or (as I do) when the bias is increased for better sound quality. Once the sensing transistor is placed at the top of the heatsinks this issue is solved.
