The latest update to the venerable AT33 Series – the first extensive overhaul in years – brings new warmth and fullness to your favorite music. Incorporating technological and material improvements, including our first use of die-cast zinc at the base of the cartridge to ward off unwanted resonance and improve expressiveness in the mid to low frequencies, the AT33x Series cartridges let you hear the finest details 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 electrical signal only from horizontal movement. This results in exceptionally clear monaural sound with a more substantial low end and reduced surface noise. The dual mono coil design is also ideal for mono playback on a stereo system.

To further enhance its monaural performance, the cartridge is equipped with a 0.65 mil conical nude stylus, which is perfect for tracking the constant width and depth of mono record grooves. Our newly developed suspension mechanism uses piano wire for even more tracking accuracy, lowering the dynamic compliance slightly for more substantial audio, particularly in the mid-low range.

The cartridge’s composite body, made of die-cast zinc, aluminum, and high-rigidity polymer, reduces and disperses resonance across the entire body, resulting in balanced, natural sound reproduction that doesn’t favor particular frequencies. PCOCC (Pure Copper by Ohno Continuous Casting) coils ensure pure, smooth signal transmission, while the neodymium magnet and permendur yoke (shaped for optimal monaural sound reproduction) create a strong magnetic field that maximizes power generation efficiency, resulting in responsive, high-resolution analog playback.

Like all AT33x Series cartridges, the body of the AT33xMONO/I includes threaded holes for easy mounting (just two screws required). These threaded holes are especially useful when mounting the cartridge to an integrated tonearm.

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 provide pure, smooth signal transmission
Neodymium magnet and permendur yoke (shaped for optimal monaural sound reproduction) maximize energy efficiency for high-resolution, responsive playback
Composite cartridge body (die-cast zinc, aluminum, and high-rigidity polymer) reduces resonance throughout the body for balanced, natural sound reproduction
Highly rigid and dense die-cast zinc material is used at the base of the cartridge to suppress unwanted vibrations and improve the expressiveness of the mid-to-low frequency range
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 center 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) enable the cartridge to be used 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

Cartridge & Stylus
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
Cantilever	Duralumin pipe
Static Compliance	14 × 10-6 cm/dyne
Dynamic Compliance	6 × 10-6 cm/dyne (100 Hz)
Dimensions	16.1 mm (0.63”) × 16.6 mm (0.65”) × 26.1 mm (1.0”) (H × W × D)
Accessories Included	Non-magnetic screwdriver; Brush; Washer* × 2; Cartridge installation screws* (M2.6) (8.0 mm (0.31”) × 2, 10.0 mm (0.39”) × 2, 13.0 mm (0.51”) × 2); Protector
Threaded Hole	M2.6 × 2
Stylus Curvature Radius	0.65 mil
Type	MC
Weight	10.1 g (0.36 oz)

Other Details

Select Audio-Technica brand products purchased in the U.S.A. from an authorized Audio-Technica (A.T.U.S.) dealer are warranted for two years from date of purchase by A.T.U.S. to be free of defects in materials and workmanship. In event of a defect, End-User’s exclusive remedy is at A.T.U.S.’ election, the cost of repair, refund of the purchase price in the form of credit or cash, or replacement of the product. The product must be delivered to A.T.U.S. or an Authorized Service Center, prepaid, together with the sales slip or other proof of purchase date. This warranty excludes defects due to normal wear, abuse, shipping damage, or failure to use product in accordance with instructions. This warranty is void in the event of unauthorized repair or modification, or removal or defacing of the product labeling. For U.S. service return instructions and procedure please go to: www.audio-technica.com/en-us/support/repair-service. A.T.U.S.’ warranty is to the End User only. Except for A.T.U.S.’ said express warranty, A.T.U.S. MAKES NO WARRANTIES, EXPRESS OR IMPLIED, WITH RESPECT TO THE PRODUCTS. A.T.U.S. SPECIFICALLY MAKES NO WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Except to the extent precluded by applicable state law, A.T.U.S. IS NOT LIABLE FOR CONSEQUENTIAL, INCIDENTAL, DIRECT OR SPECIAL DAMAGES ARISING, DIRECTLY OR INDIRECTLY, IN RESPECT OF SUCH PRODUCTS OR USE OR FAILURE THEREOF, WHETHER BASED ON BREACH OF WARRANTY, NEGLIGENCE, STRICT LIABILITY, TORT OR OTHERWISE. This warranty gives you specific legal rights, and you may have other rights which vary from state to state.

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Audio-Technica AT33XMONO/I Dual Moving Coil Monaural Cartridge

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Audio-Technica AT33XMONO/I Dual Moving Coil Monaural Cartridge

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