This 78 RPM mono cartridge is derived from Audio Technica's AT33, except that its stylus and suspension have been changed to play 78 RPM mono records.
Audio Technica AT 3/SP: Needle
It features the solid aluminium body with internal damping with extra synthetic Hanenite resin of the AudioTechnica AT33 range, with a 78 conical stylus bonded onto an aluminium cantilever.
Audio Technica AT 3/SP: Suspension
The suspension of this AudioTechnica phono cartridge has been optimised to minimise vertical oscillations on 78 RPM records.
In fact, the output signal is solely obtained with the horizontal component of the movement. The vertical compliance has been optimised to minimise groove and stylus wear.
Audio Technica AT 3/SP: Listening and test review
This AT-MONO3/SP cartridge is recommended for mono 78 RPM records like Shellacs, released between 1925 and 1952.
This cartridge delivers one of the best sonic performances for this format.
If we were to name the best 78 rpm cartridge on the market? Definitely Audio Technica's AT-Mono 3/SP!
We highly recommended it!
Type: Medium output MC
Body: Aluminium/synthetic resin
Frequency response: 45 Hz-7 kHz
Output voltage: 1.2 mV
Vertical tracking angle: 23°
Tracking force: 3/7g
Recommended tracking force: 5g
Stylus: Spherical 78
Stylus tip shape: 2.5 mil
Assembly: bonded round cross-section
Cantilever: Aluminium tube
Compliance: 3.5 x 10-6cm/dyne
Coils: PCOCC conductor
Load impedance: 400 ohms at 47 kOhms
Internal impedance: 10 ohms
Coil inductance: 22 µH
Cartridge weight: 6.8 g
Mount: ½ inch screw
Height: 16 mm