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Ortofon SPU Reference GM



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Brand: Ortofon

The Ortofon SPU Reference GM is a high-end cartridge designed for use in turntables. It is part of the SPU (Special Low Output) series, which was originally developed in the 1950s and has been further refined over time.The GM model, which stands for "Graphen," features a diamond cantilever coated in graphene, a material known for its strength, durability, and electrical conductivity. The diamond stylus is cut with a special tip, allowing for high resolution and low distortion.The SPU Reference GM also features a specially designed winding process for the coil, which reduces noise and enhances dynamics. The body is made from high-quality materials like brass and composite polymers, providing a stable foundation for the cartridge.Overall, the Ortofon SPU Reference GM is an exceptional choice for audiophiles seeking the highest possible levels of detail, accuracy, and musicality in their vinyl playback experience. It requires a phono preamp with a low output impedance for best results.



  • Type: Moving Coil
  • Output Voltage: mV
  • Freq Response: 20Hz - 40kHz
  • Tracking Force: 2.5 - 3.5 g
  • Mass: 28.5 g
  • Channel Separation: 25 dB
  • Channel Balance: 1 dB
  • Load Impedance: > 10 Ω
  • Output Impedance: 3 Ω
  • Stylus:
  • Stylus Tip: 5 x 100um Nude Ortofon Replicant 100
  • Cantilever:
  • Dynamic Compliance: x 10-6cm/Dyne
  • Static Compliance:
  • Price:

Ortofon SPU Reference GM

Ortofon SPU Reference GM

Ortofon SPU Reference GM

Ortofon SPU Reference GM

Ortofon SPU Reference GM



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