Manufacturer Part Number: Green3 Only 15% of all Grado Black3 cartridges meet the increased criteria to become Green3 cartridges. Key Features: Hand-made in the U.S.A. with 100% quality control A high-end cartridge for under $100! Replaceable stylus Grado Prestige Series Green3 Turntable Phono Cartridge The Prestige series of cartridges are designed for high output and excellent stability under severe use. A considerable tip mass reduction results in a frequency response to 50 kHz and beyond and tracking forces from 1-2 grams. Grado s Prestige Series cartridges are acclaimed by experts as virtually the finest pickups in the world at their price. Grado s redesigned Green3 phono cartridges have had their coil design reconfigured and the effective moving mass of their generating system has been reduced by 17%. The Green3 uses a three-piece OTL (optimized transmission line) cantilever technology standard oxygen free wire in the coils and Grado s specially designed elliptical diamond mounted in a brass bushing. Each Grado Green3 phono cartridge is hand-made in Brooklyn New York and tested for frequency response channel balance phase linearity inductance and resistance-only 15% of the Black3 cartridges meet the higher quality standards necessary to become a Green3. All Green3 cartridges feature user-replaceable stylii. Specifications: Frequency response: 10-50 000 Hz Operating principle: Moving iron Channel separation: 30 dB @ 1 kHz Input load: 47k ohms Output: 5 mV @ 1 kHz (5 cm/sec) Recommended tracking force: 1.5 grams Stylus type: Elliptical Inductance: 45 mH Resistance: 475 ohms Compliance CUs: 20 Mounting type: Standard 1/2 Weight: 5.5 grams Note: Grado products cannot be shipped to customers that live outside of the U.S.A. Product Details BrandGrado LabsModelGreen3Part Number232-304UPC182092000097Unit of MeasureEachWeight0.05