Novice responding,
Thanks for the suggestions. Phonostage is set for MM Cartridge gain, load is 47K ohms. I was comparing to this Turntable with a Grado Black Cartridge and some other Phonostage I am not sure of. It was a set-up the dealer had arranged. I chose the Grado Silver to replace the Black, I also chose the Space Tech Lab P-102 with Tubed MM Output Stage and Tubed Power Rectifier. This Mid-range suckout seems to come and go, usually leaves after playing numerous records in a row. I was thinking that it was just the Cartridge breaking in. Does anyone know how long the Cartridge should take to break in? I only have maybe 20 hrs. on this Cartridge. It is a brand new Cartridge. I was just wondering if I might have some other problem. I can try the suggestion with the cardboard and the VTA. If the sound goes in the right direction, then the VTA is way off and has to be adjusted.