Wyred 4 Sound STP-SE vs Bryston BP6?

For the moment i am using a Rotel RA-1520 as a pre connected to a RB-1562 class D amp to power a pair of dynaudio Focus 140.

I am interested in upgrading my preamp and have been interested in the Wyred 4 Sound Stp-SE and in the Bryston BP6.
Eventually i would like to upgrade the amp also to either of the brands above.
Does anybody has any idea of how these two measure up?

Thanks