Line Stage Cartridge??

are there any current linestage cartridges available besides the soundsmith strainguage?
currently using winn strainguage. can anyone help me find if sao winn is still around? i've already attempted looking for him 2 years ago, same last name etc in the goleta - santa barbara area where i had previously phoned him but to no avail.
my preamp phonostage is already in use with another turntable/cartridge setup.
Just curious,how can any cartridge work without a phono preamp? Am I missing something?Thanks