I have not seen on this forum any talk about phono cartridge used in 33rpm or only one .. .
I believe the cartridge must be choosen considering your speakers .
I use jbl 34xx and 43xx for years and the best phono cartridge i ever use with my jbl was the empire 4000 DIII for his very deep low medium and very fine high frequency .( i did try grado - shure - nakamichi ... )
Any comment ?

gerard