Audio Technica AT33Sa Cartridge

Introducing the AT33Sa from Audio Technica

Dual Moving Coil Cartridge

The AT33Sa is the first Audio-Technica MC cartridge model to feature a Shibata stylus. In addition to its superior high-range performance as a line-contact stylus, the Shibata stylus produces mid and bass sound that is strong and rich.

The Shibata stylus is mounted on a boron cantilever with a double damper to greatly improve sound quality.

Advanced tapered boron cantilever and reduced weight

Tapering the cantilever and revising the number of coil rotations reduce the weight, giving the cartridge better high range performance and wide range reproduction.

Neodymium magnet with dramatically enhanced magnetic energy and permendur yoke

The model uses a neodymium magnet with maximum energy product BHmax of 50 [kJ/m3] and a permendur yoke with high saturation flux density and outstanding magnetic properties, which further enhances the concentrated magnetic field of the coil gap.

PCOCC coil 

This enables purer transmission because it is not subject to grain boundaries in the direction of transmission.

High-separation, wide response dual moving coil

The basic structure is an original MC type, with separate cylindrical coils to the left and right channels. Since power is generated independently in each of the left and right channels, this structure offers truly superior separation.

If the signal from the opposite channel escapes, this can cause intermodulation distortion and have a decisive impact on audio quality and how the stereo sound spreads. The structure of this product ensures a clear and smooth sound.

Additionally, the two coils have a reverse-V shape which reduces effective moving mass as seen from the stylus tip, limiting unnecessary movement of the coil and further eliminating distortion.

VC mould limits unnecessary vibration

The VC mould that affixes the coils is made with hard synthetic resin containing potassium titanate to make it highly strong and rigid.

A tough body designed to be rigid

The product’s housing is made of precision-cast hard aluminium alloy. Hard synthetic resin sandwiching in the structure on the top and bottom suppresses parasitic resonance which minimises unnecessary noise while enhancing rigidity and the signal-to-ratio.

Technical Specifications

Type
Dual Moving Coil

Body Material
Aluminium/Synthetic Resin

Frequency Response
15 to 50,000 Hz

Channel Separation
30 dB (1 kHz)

Output Chanel Balance
0.5 dB (1 kHz)

Output
0.4 mV (at 1 kHz, 5 cm/sec)

Vertical Tracking Angle
23 degrees

Vertical Tracking Force Range
1.8 to 2.2 g (standard 2.0 g)

Stylus Shape
Shibata

Stylus pressure
1.8 to 2.2g (standard 2.0g)

Stylus Curvature Radius

Shibata

Stylus Construction
Nude square shank

Cantilever
Nude tapered boron

Static Compliance
40 x 10 – 6 cm / dyne

Dynamic Compliance
10 x 10 – 6 cm / dyne (100 Hz)

Wire Used for Coil
PCOCC 

Terminal Pins
PCOCC 

Recommended Load Impedance
Min 100 O 

Coil Impedance
10 O (1 kHz)

DC Resistance
10 O

Coil Inductance
22 H (1 kHz)

Cartridge Weight
6.9 g

Dimensions
16.0 (H) x 16.6 (W) x 26.5 (L) mm

Mounting
1/2” centres

Included Accessories Included

• 1 non magnetic screw driver
  1 brush; 2 washers
  2 Nuts
  2 x 19 mm mounting screws
  1 plastic protector
  1 set of PCOCC Lead Wires (AT6101)

*Information obtained from Manufacturers Website