This is One set ZYX R1000 Airy 3-GH/SB GOLD WIRED 0.48mV High Output MC Cartridge, coil in 6N Copper Wired Gold Plated, made in Japan by ZYX.
Silver Base (SB) adds about 4 grams weight to the cartridge totally made the cartridge weight 7.9 gm
Condition: Brand new in box, not used before
Specification:-
Cryogenic Treatment Temperature: -196C (-320F)
Output Voltage: 0.48mV [3.54cm/sec., 1kHz]
Frequency Response ( +/- 1dB): 10Hz~100kHz (20Hz~20kHz)
Channel Separation: > 30dB [1kHz]
Channel Balance: < 0.5dB [1kHz]
Recommended Tracking Force: 2.0gm [20 ~ 25 degrees Celsius]
Tracking Force Range: 1.7 ~ 2.5gm
Compliance horizontal (vertical): 15 x 10-6 cm/dyne (12 x 10-6 cm/dyne)
Trackability: > 80micro m/2.0gm
Internal Impedance: 8 ohms
Coil Wire: G type: 5N Gold φ 0.035mm/CRYO
Recommended Load Impedance: > 100 ohms
Cantilever Material: Boron rod 0.3mm dia.
Stylus: Microridge Solid Diamond 0.07mm sq.
Contact Radius: 3micro m x 60micro m, 2000 Hour/2.0gm
Output Terminals: 1.25mm dia. gold plated [EIA]
Net Weight: 5gm