Grado Reference3

The Master3 and Reference3 models use a five piece OTL cantilever technology achieving an additional 5% tip mass reduction over the Platinum3 and Sonata3 models. The coils are wound with ultra-high purity long crystal (UHPLC) oxygen free copper wire. The Master3 model is mounted with Grado's specially designed nude elliptical diamond, and the Reference3 model uses Grado's true ellipsoid design diamond. These cartridges are individually calibrated. Body: Australian Jarrah Wood Cantileaver: Machined Boron / Diamond Tip Output: High 4.0mV @5 CMV (45) Low 1.0mV @5 CMV (45) Inductance: High Output 55mH Low Output 6mH Resistance: High Output 660 ohms Low Output 70 ohms Input Load: 10k-47k ohms Cartridge Weight: 10 grams Tracking Force: 1.6-1.9 grams Compliance 20μm/mN Channel Separation: Average 30db - 10-30k Hz Controlled Frequency Response: 10-60 KHz Non-Sensative to Capacitive Load Builds: High Output, Low Output, Mono