a few years ago I bought a P2 (2nd hand). I used it on my vocals (even live). The sound is much better/clearer than most common mixers ! But I heard (not always) a sort of hiss (high freq) coming through. There was also something wrong with the inserts, I suppose.
Now I want it to use it in my studio. But I hear nearly the same….a high freq tone, not loud, then on the left, then right.
Can you give my P2 a full service check up please to bring this baby back to its original state ? Is this possible ?