Same here Werd
I tried the 1v setting at 1st When I 1st set up my Bryston Gear.
I left it at the 1v setting for app 2 weeks.
I went back to the 2v setting and it's been there ever since.
My ears prefer the 2v setting
Like I said I have not herd the BDA- with my Amp's at the 1V setting yet
Robert