The Dynavector Karat Ruby is a vintage from mid 80s. The cartridge is a moving coil with 0.2 mV output, frequency response is 20 to 50,000 Hz, inpedance is 30ohms, stylus is line contact naked diamond, tracking force is about 1.5 grams and the cartridge weight is 5.3 grams. I had this cartridge as new, back on mid 80s I played with it about 6 albums and then I stored it in very good environment and today I listen to it just to check it out, what a beautiful sound. I checked it under the microscope and it looks as in excellent condition. I have too many cartridges, therefor I am selling it. Shipping in continental USA is only $9.50 .