Audio-Technica AT33xMONO/II Mono Phono Cartridge

Audio-Technica AT33xMONO/II Mono Phono Cartridge

The Audio-Technica AT33xMONO/II is a mono phono cartridge designed for LP vinyl playback with a specified frequency response of 20 Hz to 20,000 Hz. It uses a 0.65 mil stylus curvature radius, a duralumin-pipe cantilever, and a standard tracking force of 2.5 g to provide the mechanical and electrical characteristics required for compatible mono record playback systems.

For listeners building or maintaining a dedicated mono vinyl setup, the AT33xMONO/II combines a 20-degree vertical tracking angle with a recommended tracking-force range of 2.3 to 2.7 g. Its electrical specifications include a 0.37 mV output at 1 kHz, 10-ohm coil impedance, 10-ohm DC resistance, and 27 μH coil inductance. A recommended load impedance of at least 100 ohms applies when the cartridge is connected to a head amplifier.

The cartridge measures approximately 0.6 x 0.7 x 1 inches in height, width, and depth and uses two M2.6 threaded mounting holes. Its compact body is supplied with installation hardware and maintenance accessories, including a non-magnetic screwdriver, brush, washers, mounting screws, and protector. The specified 1 dB output balance and 25 dB horizontal-to-vertical output ratio further define its performance for mono LP playback applications.

Key Features

• Designed for mono LP vinyl playback with a 20 Hz to 20,000 Hz frequency response
• 0.65 mil stylus curvature radius for compatible record-groove tracking
• Duralumin-pipe cantilever provides the specified stylus support structure
• Tracking-force range of 2.3 to 2.7 g with a 2.5 g standard setting
• 0.37 mV output voltage measured at 1 kHz with a horizontal signal
• Recommended load impedance of at least 100 ohms when connected to a head amplifier
• Two M2.6 threaded mounting holes support cartridge installation

Technical Specifications

• Frequency Response: 20 to 20,000 Hz
• Vertical Tracking Angle: 20°
• Tracking Force: 2.3 to 2.7 g (2.5 g standard)
• Recommended Load Impedance: ≥ 100 ohms when connected to a head amplifier
• Coil Impedance: 10 ohms at 1 kHz
• DC Resistance: 10 ohms
• Coil Inductance: 27 μH at 1 kHz
• Output Voltage: 0.37 mV at 1 kHz, 5 cm/sec., horizontal signal
• Output Balance: 1 dB at 1 kHz
• Horizontal/Vertical Output Ratio: 25 dB at 1 kHz
• Stylus Shape: 6 × 10-6 cm/dyne at 100 Hz
• Cantilever: Duralumin pipe
• Static Compliance: 14 × 10-6 cm/dyne
• Dimensions: 0.6 x 0.7 x 1 inches (H x W x D)
• Threaded Holes: M2.6 × 2
• Stylus Curvature Radius: 0.65 mil
• Weight: 0 lb
• Notes: Two washers and two 0.3-inch screws secure the cartridge in its packaging at the time of purchase and should be retained after removal. Product specifications are subject to modification for product improvement without notice.

What's Included

• Non-magnetic screwdriver
• Brush
• 2 washers
• 2 M2.6 cartridge installation screws, 0.3 inches long
• 2 M2.6 cartridge installation screws, 0.4 inches long
• 2 M2.6 cartridge installation screws, 0.5 inches long
• Protector