I'm back , in front of another Zen amp , a CS this time . Somebody slap me if I think of selling this one , I couldn't forgive myself last time ! The Highs and Lows of HIFI....

I've been doing some scheming and need to know the input impedence for one of these amplifiers. I can't seem to find them on the site . I was able to locate the figure for a SE84C.
Any help would be appreciated. Thanks Dan