£x.xx

The AT33xMONO/I is the latest update to Audio-Technica's long-running AT33 Series — its first extensive overhaul in years — bringing added warmth and fullness to playback. Technological and material improvements, including the first use of die-cast zinc at the base of the cartridge to ward off unwanted resonance, improve expressiveness in the mid to low frequencies and help reveal fine detail across the audio spectrum.

The AT33xMONO/I features a "True Mono" dual moving coil design that is unaffected by any vertical noise components picked up from the record groove, instead generating an electrical signal only from horizontal movement. This results in exceptionally clear monaural sound with a more substantial low end and reduced surface noise, and the dual mono coil design is also ideal for mono playback on a stereo system. To further enhance monaural performance, the cartridge uses a 0.65 mil conical nude stylus, suited to tracking the constant width and depth of mono record grooves. A newly developed suspension mechanism uses piano wire for improved tracking accuracy, slightly lowering the dynamic compliance for more substantial audio, particularly in the mid-low range.

The composite body — made of die-cast zinc, aluminium and high-rigidity polymer — reduces and disperses resonance across the whole body for balanced, natural reproduction that does not favour particular frequencies. PCOCC (Pure Copper by Ohno Continuous Casting) coils ensure pure, smooth signal transmission, while a neodymium magnet and permendur yoke — shaped for optimal monaural reproduction — create a strong magnetic field for responsive, high-resolution playback. As with all AT33x Series cartridges, the body includes threaded holes for easy two-screw mounting, which is especially useful with an integrated tonearm.

Please note: the AT33xMONO/I's stylus assembly is not field-replaceable, but Audio-Technica offers a fee-based Moving Coil Exchange Program to service the cartridge.

Ideal For

Clear monaural playback of mono records, including mono playback on a stereo system, mounted to headshells and integrated tonearms.

Features

• AT33x Series dual moving coil monaural cartridge with 0.65 mil conical nude stylus
• Balanced, high-resolution sound reproduction brings out all the details in a piece of music
• "True Mono" dual moving coil design only generates electrical signal from horizontal movement for exceptionally clear monaural sound with a more substantial low end and reduced surface noise
• PCOCC (Pure Copper by Ohno Continuous Casting) coils for pure, smooth signal transmission
• Neodymium magnet and permendur yoke (shaped for optimal monaural sound reproduction) maximise energy efficiency for high-resolution, responsive playback
• Composite cartridge body (die-cast zinc, aluminium and high-rigidity polymer) reduces resonance throughout the body for balanced, natural reproduction
• Highly rigid, dense die-cast zinc at the base of the cartridge suppresses unwanted vibrations and improves mid-to-low frequency expressiveness
• Threaded mounting holes make it easier to mount the cartridge to a headshell, especially one integrated into a tonearm
• 0.65 mil conical nude stylus tracks the centre of the record groove for reliable performance and excellent fidelity
• High-hardness duralumin pipe cantilever
• Newly developed suspension mechanism and rubber damper design (with lower dynamic compliance than other A-T cartridges) allow use with a variety of tonearms
• Thick gold plating on the terminal pins reduces contact resistance and enhances sound quality
• Crafted and hand-finished by artisans in Japan

Specifications

• Type: MC (Moving Coil)
• Frequency Response: 20 to 30,000 Hz
• Vertical Tracking Angle: 20°
• Tracking Force: 2.0 to 2.4 g (2.2 g standard)
• Recommended Load Impedance: ≥ 100 ohms (when head amplifier connected)
• Coil Impedance: 10 ohms (1 kHz)
• DC Resistance: 10 ohms
• Coil Inductance: 27 μH (1 kHz)
• Output Voltage: 0.42 mV (1 kHz, 5 cm/sec., horizontal signal)
• Output Balance: 1.0 dB (1 kHz)
• Horizontal/Vertical Output Ratio: 25 dB (1 kHz)
• Stylus Shape: Nude Conical
• Stylus Curvature Radius: 0.65 mil
• Cantilever: Duralumin pipe
• Static Compliance: 14 × 10⁻⁶ cm/dyne
• Dynamic Compliance: 6 × 10⁻⁶ cm/dyne (100 Hz)
• Dimensions (H × W × D): 16.1 × 16.6 × 26.1 mm
• Weight: 10.1 g
• Threaded Hole: M2.6 × 2
• Accessories Included: Non-magnetic screwdriver; brush; washer × 2; cartridge installation screws (M2.6) — 8.0 mm × 2, 10.0 mm × 2, 13.0 mm × 2; protector

Product Code: AT33xMONO/I