Audio-Technica AT-MONO3/SP



The AT-MONO3/SP is a high-output (1.2 mV) moving coil cartridge designed specifically for use with 78 RPM mono shellac records.* Due to the horizontal configuration of its PCOCC (Pure Copper by Ohno Continuous Casting) voice coils, the AT-MONO3/SP cartridge only generates electrical signal with horizontal movement, yet it also has appropriate compliance in the vertical direction to keep groove wear to a minimum. The voice coils are wired in series, resulting in one mono signal that is transmitted to the cartridge’s white-blue terminals and red-green terminals in order to feed both inputs of a stereo phono preamp.

The cartridge’s low-mass 2.5 mil conical stylus is mounted on an aluminum cantilever for excellent tracking of the wider 78 RPM shellac grooves. The cartridge features a strong, rigid body of die-cast aluminum alloy and synthetic resin to eliminate unnecessary vibrations.

* This cartridge with 2.5 mil conical stylus is not compatible with microgroove 33-1/3 and 45 RPM vinyl records. It is designed to play 78 RPM SP (standard play) shellac records.

Frequency Response 20-15,000 Hz
Vertical Tracking Angle 23°
Vertical Tracking Force 3.0-7.0 g (5.0 g standard)
Recommended Load Impedance 400-47,000 ohms*
Coil Impedance 40 ohms (1 kHz)
DC Resistance 40 ohms
Coil Inductance 190 µH (1 kHz)
Output 1.2 mV (at 1 kHz, 12 cm/sec)
Stylus Shape 2.5 mil conical
Stylus Type Bonded round shank
Cantilever Aluminum pipe
Static Compliance 10 x 10-6 cm/dyne
Dynamic Compliance 3.5 x 10-6 cm/dyne (100 Hz)
Mount Half-inch
Weight 6.8 g (0.24 oz)
Dimensions 16.0 mm (0.63″) H × 16.6 mm (0.65″) W × 26.5 mm (1.04″) D
Accessories Included Non-magnetic screwdriver; 2 washers; 2 nuts; cartridge installation screws (13 mm × 2, 20 mm × 2); plastic protector; brush; PCOCC lead wire set


Note: Stylus assembly is not field-replaceable.

* When connected to the MC input of a transformer-less phono pre-amp, choose a lower gain position due to the high output voltage (1.2 mV).

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