Turntable Phonograph Dual Stereo Cartridge with Red Ruby Sapphire Dual Side Stylus Needle for LP/78RPM Vinyl Record Player Accessory Replacement Features:  Designed to be a great DIY replacement for most turntable, perform better and deliver warmer sound. Dual side with ruby and sapphire styluses for both LP and 78 vinyl record player. Features durable design, excellent channel separation and low distortion for outstanding tonal quality Excellent sound quality and strong tracking capability. It makes music smooth, dynamic and clean. Easy to replace on your own, great backup accessory for turntable. Specifications: Output Voltage at 1000Hz, 5cm/s: 120-250V 1 KHz L, R Channel Balance: ≤ 3dB 1KHzL, R Channel Spacing: ≥ 15dB -3dB Frequency Range Under: 80-10000Hz Frequency Response: 80~10000Hz+3/-1dB Recommended Needle Pressure and Tracking Ability at 315Hz: 70 μ M Dynamic Level Compliance: 20 μ M/mN Stylus Category: Cone Stylus Type: Ruby/Sapphire Ruby Tip Lifespan: 170h Sapphire Needle Tip Lifespan: 200h Needle Pressure Range: 4.0-5.0g (40-50mN) Recommended Needle Pressure: 4.5 (45mN) Track Angle: 20 ° Recommended Load Resistance: 470K0hm Recommended Load Capacitance: 150~300pF Color: Black & Red Material: ABS + Brass Net Weight: 3g / 0.1oz Package Size: 5.5 * 4.2 * 2.2cm / 2.17 * 1.65 * 0.87in Package Weight: 16g / 0.56oz Packing List: 1 * Cartridge