Bryston 28bsst2 worthy upgrade from a krell fpb70?

I am using a magnepan mg 20.7, i was wondering if the bryston 28bsst2 is in the same league or better than my older krell fpb700? The krell is already 11 years old and am thinking of moving on to something new. Btw preamp is a jadis jps2

Thanks in advance