Audio Technica VM670SP

Audio Technica VM670SP Cartridge

The Audio Technica VM670SP is a specialized phono cartridge designed for optimal playback of 78 RPM records. This product is part of Audio-Technica’s VM cartridge range, a series that harkens back to the company’s beginnings as primarily a manufacturer of high-end phono cartridges.

Audio Quality

The VM670SP is engineered for monophonic sound reproduction, with a specialized body and internal wiring. It features dual magnets that are internally connected to reduce record noise and achieve a highly focused “centered” sound image that stereo cartridges cannot provide. The 3.0 mil stylus radius makes it an excellent choice for playing 78 RPM records from a wide variety of eras.

Focus on Monaural Sound

The VM670SP doesn’t merely play records; it’s about recreating the original sound stage as it was intended. The mono-body design, which terminates the left and right channels, significantly reduces surface noise, allowing for a pure, concentrated audio experience. This design choice is particularly beneficial for monaural records, ensuring the sound remains true to its original form.

Built to Last

Durability is a key aspect of the VM670SP, with a low-resonance polymer housing that shields the internal components from vibrations and external interference. This robust construction not only extends the life of the cartridge but also enhances overall sound quality by minimizing unwanted resonances.

Key Benefits

• Specialized for 78 RPM records with a 3.0 mil conical stylus
• Enhanced monaural sound reproduction with reduced surface noise
• Paratoroidal coils for improved generating efficiency
• Durable, low-resonance housing for longevity and sonic clarity
• Easy installation with included mounting hardware

Technical Specifications

General Configuration

• Mono to dual moving magnet cartridge
• Usage: Shellac discs or phonograph
• Diamond mounting: round shank fixed by bonding
• Diamond type: conical, bonded (76 µm)
• Cantilever: aluminum tube

Audio Performance

• Frequency response: 20 - 20,000 Hz
• Output voltage: 3.0 mV (1 kHz, 5 cm/s)
• Vertical tracking angle: 23°
• Recommended load impedance: 47,000 Ω
• Coil impedance: 1,400 Ω (1 kHz)

Mechanical Characteristics

• Static compliance: 15 × 10⁻⁶ cm/dyne
• Dynamic compliance: 2.0 × 10⁻⁶ cm/dyne (100 Hz)
• Mounting centers: 12.7 mm
• Diamond size: 76 µm
• Replacement stylus: VMN70SP
• Recommended load capacitance: 100 - 200 pF

Dimensions and Weight

• Dimensions (H × W × D): 17.3 × 17 × 28.2 mm
• Weight: 6.4 g

Supplied Accessories

• Mounting screws:
  • 5 mm (×2)
  • 10 mm (×2)
• Washers (×2)
• Hex nuts (×2)