Audio-Technica AT-MONO3/SP High-Output MC 78-RPM Shellac-Record Cartridge

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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.

  • Dual moving coil cartridge designed specifically for use with 78 RPM shellac records*
  • Aluminum cantilever with 2.5 mil conical stylus
  • Strong, rigid body construction of die-cast aluminum alloy and synthetic resin
  • PCOCC (Pure Copper by Ohno Continuous Casting) coil enables pure signal transfer
  • Compatible with stereo playback systems

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).