These use a parabola instead of a cone shape and so achieve a contact area four times greater than that of the spherical stylus. This improves tracking, reduces wear and doubles the stylus resonant frequency.
"Dear CVC Productions
Thank you for your prompt processing of my 1967 LP home recording of my long deceased wife,s guitar and singing. It amazed me that this long hidden and abused LP could be restored,with scratches and blemished removed.
As per my instructions,the color cover together with the titles to the songs were faithfully ..."
