The Platinum3 and Sonata3 models use a modified four piece OTL cantilever technology achieving a 10% tip mass reduction over the Prestige series and ultra-high purity long crystal (UHPLC) oxygen free copper wire in the coils. The Platinum3 model uses Grado's specially designed elliptical diamond, and the Sonata3 model uses Grado's specially designed nude elliptical diamond. Body: Australian Jarrah Wood Cantilever: Aluminum / Elliptical Diamond Output: High 4.0mV @5 CMV (45) Low 1.0mV @5 CMV (45) Inductance: High Output 55mH l Low Output 6mH Resistance: High Output 660 ohms Low Output 70 ohms Input Load: 10k-47k ohms Cartridge Weight: 9 grams Tracking Force: 1.6-1.9 grams Compliance: 20μm/mN Channel Seperation: Average 30db - 10-30k Hz Controlled Frequency Response: 10-60 KHz Non-Sensative to Capacitative Load Builds: High Output, Low Output, Mono