On the back of the Ramsa ther are 2 phono ins. Yes I said Phono ins. Now. There are no switchs or knobs to control these inputs.. So Im assuming that they are on a direct path to the master bus. Could these be used as Inserts for a stereo comp and Master Stereo EQ? Or could they be, with the right Modifications? Im pretty sure that the 820B has this instead of phono ins..