Ensamble virtuoso pre

Very grateful to whom could tell me if this preamp is inverting. Can't find much around. Ready to pay for a manual scanned copy. Thanxs
Can't yell you if it is inverting or not but the sure wat to tell is if you switch the leads to the amp and whichever way it sounds better is the way to keep it at. After that it matters not a jot if it inverts because it is now the way it is supposed to be and it can't do any harm. Hope this helps as many moons ago I had ancient Quad preamps which inverted an once corrected sounded great (for the time)!!