Bryston or Yamaha?

@travelinjack  If the DAC is in the preamp it’s receiving power, and if it’s receiving power it’s emitting noise and low-level analog preamp signals are very susceptible to noise.  No thanks. 

I doubt the 30+ year old Yamaha is digitizing any analog inputs.

@travelinjack  I didn’t say it was digitizing inputs, I said it has a DAC in it doing digital processing that creates noise I don’t want in a stereo preamp.

I owned the BP6 for years, and it’s the most transparent component I’ve ever owned — straight wire with gain personified.  It just gets out of the way and lets everything through with pristine clarity, quietness, solid and precise imaging, and an expansive 3D soundstage.  It’s basically a blank slate upon which you can put anything, and if these are the things you’re looking for it’s an outstanding preamp.  It is not something that’s going to add any flavor of its own, so if that’s what you’re after look elsewhere.  I haven’t heard the Yammy so can’t comment on sound, but personally I don’t want a DAC/digital processing going on in my stereo pre and would much prefer a separate DAC, but I’m more of a purist that way.  Hope this helps, and best of luck.