I own the Krell FPB-600c and the Classe’ DR-9(s). Cannot speak to Bryston. The Krell drives my Thiels cleanly to mortifying volume levels and grabs the woofers sternly by the balls. The (old) Classe’ is more natural and involving, lacking in nothing to my ears with the Thiels. The DR-9 is my amp of choice between the two.
Dave
Dave