The stylus is a consumable product with a normal service life of approximately 300-400 hours. Damage caused by improper handling, excessive tracking force, low-quality records, or unstable turntable surfaces may reduce the lifespan of the needle tip. As the radius of curvature of the needle tip increases with use, its ability to track high-frequency signals in the groove diminishes. When audio details decrease, high frequencies become less clear and sound becomes dull, indicating it may be time to replace the stylus. Our phono needles feature an elliptical tip design and are made of hardened diamond. This design allows for closer contact with the groove walls, enabling the pickup of fine audio details and delivering full, rich, and layered sound reproduction. Natural and detailed audio performance is achieved during playback. Note: The stylus is small. When installing, hold it by the side and avoid touching the tip. First remove the old stylus. Take out the new stylus, hold it by the side, insert the tab on the stylus into the slot at the bottom of the cartridge, and swing the stylus body upward until the top of the stylus is flush with the cartridge head to complete installation. Output voltage: 4.2 mV Frequency response: 20 Hz - 20 kHz Channel balance: 1.5 dB Stylus type: Highly polished and shaped Stylus construction: Bonded round shank Color: White & Black Material: Plastic Package Contents: 1 x ATN3600L Replacement Stylus 1 x Stylus Cleaning Brush Only the above package content is included; other items are not included. Note: Lighting effects and monitor settings may cause slight color differences between the image and the actual item. Measurement tolerance: +/- 1-3 cm.