This is a telecoil of legends, lan in 1965 and still ctalogue denon in 2007! It is like "moving coil" and requires a pre-amp adapted type "mc" the impdance load is 100 ohms, the pressing force is 2.5 grams. the sound is trsdtaill registres.rserve in all the decks "audiophiles" that cell requires a tonearm well made! it does not dcevra mlomane demanding, the price is around 180