Bryston or Yamaha?

The preamp section of even a decent integrated amp is usually the weak link due to parts quality, component space and heat issues. To many unknow variables to verify your claims.

@helomech    Thx for taking time to reply. Not outing you but name the preamps in question and the details of the set up when making such a demonstrative statement. Yamaha is a very solid brand that adds very little coloration which sets up a building block for a fine HEA system