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SPEC GMP-8000

Turntable Details

Drive

Belt

Motor

DC

Wow & Flutter %

Rumble [dB]

Speed

33, 45

Dimensions [mm]

Platter Material

Gunmetal

Platter Diameter [mm]

Total Weight [kg]

Tonearm

Year Built

Straight

Platter Weight [kg]

14

Plinth Material

Wood

Price

Additional information

The SPEC GMP-8000 turntable is a high-precision analog vinyl playback system notable for its unique string-driven mechanism rather than the typical belt drive. The turntable uses a string to transmit the motor's rotational force to the platter, which enables extremely accurate and constant-speed rotation with minimal delay or slip, thereby achieving exceptional rotational accuracy and sound quality.


Key technical features include:

  • The string drive system: The string used must have precise tension, as unlike elastic belts, the string behaves more rigidly, allowing direct and instant transfer of rotational velocity from the motor to the platter.

  • Massive gunmetal platter with high inertia moment (3,260 kg·cm²): This large, 14 kg platter ensures smooth, precise rotation with stable inertia, minimizing speed fluctuations.

  • Specialized bearing design: The bearing consists of a fixed shaft and an outer rotating sliding bearing with magnetic force assistance to reduce load and mechanical noise, ensuring stable and quiet rotation.

  • High precision DC core-less motor by maxon motor (Swiss-made): The motor features 9 slots, rare earth magnets, rare metal brushes, and 250 pulses per rotation for perfect speed control with minimal torque ripple and vibration.

  • Multi-material chassis: The body uses thick laminated birch wood veneers for rigidity and internal loss damping, combined with aluminum and copper alloy bases for tone-arm and motor mounting to control vibrations.

  • Adjustable string tension mechanism: Allows tuning of the string drive system for optimal performance, with supplied nylon and polyester strings for user experimentation.

  • Size and weight: The turntable measures approximately 48 x 65 cm, with the platter diameter around 15.75 inches and weighing around 14 kg.

The GMP-8000 is considered a semi-finished product in that users can explore various string types and tensions to extract the best performance, aiming to deliver "the ultimate high-resolution sound" from vinyl LPs. It is built by a team of ex-Pioneer engineers known for meticulous Japanese craftsmanship, with a reputation for producing some of the highest quality analog playback components.

Overall, the SPEC GMP-8000 prioritizes precision mechanical design, vibration control, and speed consistency to deliver an audiophile-grade analog playback experience.

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