The Nagaoka MP-500 phonograph cartridge offers the highest musical and creative expression of the new MP series. It expertly extracts and reproduces with vivid, colorful and dimensional clarity what others miss. Meet our little friend – the Nagaoka MP-500 phonograph cartridge – the master of the grooves. Features -Exclusive super rigid body for ultra resonance and superb fidelity -Superfine line contact diamond stylus -Powerfull samarium cobalt magnet -Low-mass, high strenght boron cantilever -Carbon fibre reinforced plastic shoe -Anti ferro magnetic permalloy shield casing Stylus replacement: Nagaoka JN-P500 The stylus replacement interval varies depending on the using conditions. But for general use at home, the reference time is between 150-200 hours in which the stylus begin to wear and the tone quality deteriorates. Recommend replacing the stylus as aerly as possible to enjoy clear tone for a long time and not to damge the disc grooves.