You can only hook up a preamp to your YBA if the YBA has an "amp in" jack. The only integrateds I know with such jacks are the McIntosh MA6500 and MA6900 so I believe you are out of luck there.
However, the new Passion has a "pre out" which if yours does too, you can hook up a tube amp to it and use the YBA as a preamp only. That would get you your tube sound for sure.
The tubiest tube pre I have heard is the Cary SLP98 - or at least it was in the most golden-colored system I have yet to hear, played with the Cary V12, Cary cdp and Tannoy speakers.
I can't believe Warren is thinking of selling his Passion! Change indeed! ;)
Arthur
However, the new Passion has a "pre out" which if yours does too, you can hook up a tube amp to it and use the YBA as a preamp only. That would get you your tube sound for sure.
The tubiest tube pre I have heard is the Cary SLP98 - or at least it was in the most golden-colored system I have yet to hear, played with the Cary V12, Cary cdp and Tannoy speakers.
I can't believe Warren is thinking of selling his Passion! Change indeed! ;)
Arthur