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Both the Black2 and Green2 use a three piece OTL cantilever that has a Grado specific diamond mounted on a brass bushing. The Green2 are hand selected from Black2 production runs which meet higher test specifications. Approximately 15% of the run usually exhibits these specs and become a Green2.
Grado’s OTL, or optimized transmission line, technology provides an ideal transfer of signal from the surface of the LP to the generator of the system. This technology rejects unwanted resonances and lowers distortion preserving the fundamental and harmonic frequencies of the music. This also helps keep noise generated by the motor system in the cartridge to a minimum.Grado’s OTL stylus/cantilever design makes records sound quieter, improves the height, width, and depth of the soundstage, and present more detail than previously obtainable.