 Dual Stylus Turntable Cartridge with Ruby+Sapphire Needles for LP 78 RPM Record Player Replacement Parts Feature: Better control of the tone of each frequency, can make the middle frequency warm and generous, the low frequency is full and flexible, and the high frequency is bright and not dry. Made of high-quality materials, strong, wear-resistant and durable. Ruby and sapphire dual needles, Ruby for LP records and Sapphire for 78-speed vinyl records. Specification: Color: black Material: ruby, sapphire, plastic Applicable record: for LP records, for 78 RPM records Size: 34x14x13mm/1.34x0.55x0.51" Weight: 16g Structure: Polarity: When the needle tip is driven horizontally (left + right),the phase of the output voltage of the left channel (L) and the right channel (R) should be the same. Stylus: Ruby+Sapphire The output voltage: When the frequency F is 1kHz, when the vibration velocity V of the sound groove in the L or R direction is 3.54CM/S or the vibration velocity of the transverse sound groove is 5CM/S, the output voltage should be within ±4DB relative to the specified value (250MV) (Ie: within the range of 200~300MV). Acupuncture pressure: When testing the tracking ability and electrical parameters of the cartridge, the acupuncture pressure should be measured within the range of 40±10MN. Needle life: the wear life of Ruby needle is about 120H Note: Stylus is included, you can disassemble and install it by yourself. Small objects, Keep away from children to avoid being eaten by children. There may be slight size deviations due to manual measurement, different measuring methods and tools. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor.  1 X Turntable Cartridge with Stylus            |
