Audio Technica AT-33MONO MC Cartridge

The AT33MONO is an MC cartridge dedicated for playback of mono 33.3 and 45rpm records (not 78rpm). 

The architecture of this model means that it just generates signal from horizontal movement only, which is optimal for mono record playback and helps reduce surface noise and record wear to a minimum. There are two coils wired in the horizontal plane which means there's output from both sets of terminals meaning that it can be used into a stereo tonearm/system without any other changes.

Due to the appropriate compliance in the vertical direction this cartridge will not damage stereo records 

Mono cartridge compatible with stereo playback systems.
Conical stylus and hard duralumin cantilever.
PCOCC coil prevents crystal gain boundary formation (in transmission direction).
"Hanenite" anti-vibration rubber eliminates unnecessary vibrations.

Technical Specifications:
Frequency Response    20 - 20,000Hz
Channel Separation    30dB (1kHz)
Vertical Tracking Angle    23°
Vertical Tracking Force    2.3 to 2.7 g (standard 2.5 g)
Recommended Load Impedance    More than 100Ω (when head amp connected)
Coil Impedance    10Ω (1kHz)
DC Resistance    10Ω
Coil Inductance    28µH (1kHz)
Output Voltage    0.35mV (1kHz and 5cm/sec. horizontal signal)
Output Channel Balance    1.0dB (1kHz)
Stylus Shape    Conical
Cantilever    Duralumin pipe
Static Compliance    20×10-6cm/dyne
Dynamic Compliance    6×10-6cm/dyne (100Hz)
Mounting    1/2" Centers
Dimensions    H16×W16.6×D26.5mm
Accessories Included    Non-magnetic screwdriver x1, Washers x2, Protector x1, Cartridge fastening screw 13mm×2, 19mm×2, Nut x2, Brush x1, PCOCC lead set x1
Body Material    Aluminium/Synthetic Resin
Stylus Size    0.65 mil
Type    MC-type
Weight    6.9g