Grado Labs Ref Series Master1 4.0mV Phono Cart Half Inch Mount

Grado Labs

The newly redesigned Master1 and Reference1 cartridges have had their coil design reconfigured, and the effective moving mass of their generating system has been reduced by 17%.

All this is hand-assembled within a machined, new processed, Australian Jarrah wood housing.

  • The Master1 and Reference1 models use a five piece OTL cantilever technology achieving an additional 5% tip mass reduction over the Platinum1 and Sonata1 models.

    The coils are wound with ultra-high purity long crystal (UHPLC) oxygen free copper wire.

    The Master1 model is mounted with Grado's specially designed nude elliptical diamond, and the Reference1 model uses Grado's true ellipsoid design diamond.

    • Re-configured coil, reduced mass by 17%
    • Five piece cantilever technology achieves 5% tip mass reduction over Platinum and Sonata models
    • Nude elliptical diamond
  • Frequency Response:  10-60,000 Hz

    Principal:  Moving Iron

    Imput Load:  47K

    Output at 1KHz 5CM/sec:  0.5mV

    Recommended Tracking Force: 1.5

    Inductance:  2mH

    Resistance:  2

    Compliance CUs:  20

    Stylus Replacement F=Factory: F

    Mounting:  Half Inch

    Weight:  6.5