The stylus is a worn-out product, and its normal service life is about 300-400 hours. Except for damage caused by careless operation, the use of excessive needle pressure, shoddy inferior records and severely shaking turntables will shorten the life of the needle tip. As the radius of curvature of the sharpened needle tip becomes larger, its ability to track high-frequency signals in the sound groove decreases. When the sound details are reduced, the treble is gradually poor, and the sound becomes more and more dull, you need to consider replacing the This AT3600L is a very high-quality with more than 50 years of production history, and the production technology is very . As an entry-level , the material of the stylus has not been reduced, and the tip is an extremely artificial diamond.The needle bar is made of high-quality material, which not only enhances the hardness, but also ensures the sound level Output voltage: 4.2 mV Frequency response: 20Hz-20kHz Channel balance: 1.5dB Stylus type: Highly polished and shaped.0006 inch conical diamond Colour:Photo Color Material:plastic Package Contents: 4 x AT3600L Magnetic Stylus Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.