Hi Soundhound...you answered some of my questions on installing a tube preamp with the 950. My next question is, I have bought a tube amp to play with ( single ended triode 8 watts)can I hook this into the mains of the tube pre for 2 channel listening and leave the 770 connected into the 950 for movie watching? Then when I choose the 950 on the pre the 770 would kick in. If this makes no sense is there a device that would allow me to do amp switching depending on which component I'm using (TT or CD)