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The Master3 and Reference3 models employ a five-piece OTL cantilever technology, achieving an additional 5% reduction in tip mass compared to the Platinum3 and Sonata3 models. They feature coils wound with ultra-high purity long crystal (UHPLC) oxygen-free copper wire.
The Master3 model is equipped with Grado's specially designed nude elliptical diamond, while the Reference3 model utilizes Grado's true ellipsoid design diamond. These cartridges undergo individual calibration for optimal performance.
Grado Labs Reference3 MI Phono Cartridge
Basic Specifications
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