Audio Technica VM670SP Dual Moving Magnet Mono Cartridge

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VM670SP Dual Moving Magnet Mono Cartridge, for Shellac or Phonograph records, by Audio Technica.

Model dedicated to 78 RPM records, whose round stylus has a large curvature radius at the tip. The curvature radius is 3 mil, and suitable for playing 78 RPM records from a wide variety of eras.

Instead of using a single, large magnet, the two magnets are arranged in a V-shape. The two magnets are positioned precisely to match the positions of the left and right channels in the stereo groove walls. Consequently, the VM design ensures outstanding channel separation, extended frequency response and superb tracking.

Para-toroidal coils improve generating efficiency and offers superb linearity, since leakage of magnetic flux in this continuous and unitised magnetic circuit is low. Permeability of the cores is also optimised through the use of laminated cores.

For monaural operation, left and right channels should be connected. A mono body on which left and right terminals are connected internally reduces record noise which is primarily in the vertical direction and obtains a highly focused centre sound image compared with stereo bodies.

A permalloy centre shield plate enables the effective separation of left and right channels, suppressing electrical crosstalk to below 40dB. This is similar to the actual crosstalk value found in the grooves of the record itself.

Specialised 600 series mono body with internal wiring dedicated to monaural sound.

A conical bonded stylus with a large curvature radius at the tip. The curvature radius is 3 mil, and suitable for playing 78 RPM records from a wide variety of eras.


  • Aluminium cantilever.
  • Para-toroidal coils improve generating efficiency.
  • Mono body terminating left and right channels reduces surface noise.
  • Durable low resonance polymer housing.


  • Frequency Response: 20 - 20,000 Hz
  • Channel Separation: 28 dB (1 kHz)
  • Vertical Tracking Angle: 23°
  • Stylus Construction: Bonded Round Shank
  • Recommended Load Impedance: 47,000 Ω
  • Coil Impedance: 1,400 Ω (1 kHz)
  • Output Voltage: 3.0 mV (1 kHz, 5 cm/sec.)
  • Stylus Shape: Conical Bonded (3 mil)
  • Cantilever: Aluminium Pipe
  • Static Compliance: 15 x 10-6 cm/dyne
  • Dynamic Compliance: 2.0 x 10-6 cm/dyne (100 Hz)
  • Mounting: 1/2-in centres
  • Dimensions: 17.3 (H) x 17.0 (W) x 28.2 (L) mm
  • Recommended Load Capacitance: 100 – 200 pF
  • Replacement Stylus: VMN70SP
  • Stylus Size: 3.0 mil
  • Type: VM Type
  • Weight: 6.4 g


  • VM670SP Cartridge
  • Cartridge Installation Screws (5 mm x 2 / 10 mm x 2)
  • Washer x 2
  • Hexagon Nut x 2

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Cartridge Type:
Moving Magnet
Audio Technica
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