Aaaaaaaahhhhh..... It was the cable ....why I did not try it before
Well...I guess I forgot the rule " DON'T PANIC!"
Van den hul Thunder ... Core to core 130pf/m ; core/shield 210 pf/m. I decided to use better cable when head block was traveling to and from JRF.
Now I put Eros right behind technics with 1/2 ' some junk jumpers ... + 2db at 30Hz 0 at 10k, 0 at 15k and maybe some insignificant rase above 16 kh
All the above with the original 100k input.
Looking for low capacitance cable for internal wiring and interconnects. Any recommendations ?
and thank you everyone for your help !