VM670SP DUAL MOVING MAGNET MONO CARTRIDGE FOR SHELLAC OR PHONOGRAPH RECORDS Conical Bonded (3mil) stylus VM type dual magnet system Para-toroidal coils improve generating efficiency Aluminium tapered cantilever Mono body terminating left and right channels reduces surface noise Durable low resonance polymer housing 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. AUDIO-TECHNICA’S INTERNATIONALLY-PATENTED DUAL MAGNET DESIGN REPLICATES THE STRUCTURE OF THE CUTTER HEAD. Instead of using a single, large magnet, the two magnets are arranged in the shape of a "V". 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 generating system 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. Mono body 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.   600 SERIES Specialised 600 series mono body with internal wiring dedicated to monaural sound. CONICAL BONDED (3MIL) STYLUS 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. Type VM Type Mounting 1/2” centres Frequency Response 20 - 20,000Hz Output Voltage 3.0mV (1kHz, 5cm/sec.) Vertical Tracking Angle 23˚ Vertical Tracking Force Range 4.5 – 5.5g (5.0g standard) Stylus Shape Conical Bonded (3mil) Stylus Size 3.0 mil Stylus Construction Bonded Round Shank Cantilever Aluminium Pipe Coil Impedance 1,400Ω (1kHz) Static Compliance 15 x 10-6 cm/dyne Dynamic Compliance 2.0 x 10-6 cm/dyne (100Hz) Recommended Load Impedance 47,000Ω Recommended Load Capacitance 100 – 200pF Weight 6.4g Dimensions 17.3 (H) x 17.0 (W) x 28.2 (L) mm Replacement Stylus VMN70SP Accessories Included Cartridge installation screws 5mm ×2 and 10mm ×2, Washer ×2, Hexagon nut ×2