What is the difference between LS & PS

What is the difference between LS & PS on Audio Research preamplifiers.

Ej. LS9 & PS9 (it's for no tubes on line?)

Thank you
Paulo

pauloramirez04-29-2007 3:34am

captain Details Discussions Posts This discussion Message User 81 posts 04-29-2007 2:28pm Edit Delete hello paulo, i think you mean LS and SP. ls is a linestage only preamp and sp are their preamps with a phono stage.
mabonn Details Discussions Posts This discussion Message User 170 posts 04-29-2007 6:26pm Edit Delete LS means "line stage" and SP means "Stereo Preamp"
andrewdoan Details Discussions Posts This discussion Message User 223 posts 04-30-2007 4:25pm Edit Delete May I add that SP is stereo pre amp with phono on board. SP-L means line stage only ( no phono input).