I recently purchased a Vac Sigma 160i SE integrated and am trying to educate myself and prepare to do a lil future tube rolling. It came with the phono stage(which I wont use) I am attaching a pic of the top of the amp. Previous owner stated V01 and V02 were for the phono stage. Other than that not sure about the other slots. I am hoping to find a previous or current Vac owner that may shed some light. I have a few NOS 12ax7 and 12au7 tubes to roll in...but not sure where. I have some pairs of 12au7's and singles of 12ax7....also some quad KT88/6550's. I have emailed Kevin at VAC but not heard back.
Any comments or suggestions are appreciated.

Any comments or suggestions are appreciated.
