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Black open-back headphones with large ear cups and wing headband

Audio-Technica

Audio-Technica ATH-AD900x 53mm Open-Back Headphone

SKU CH-BRKC-59FHY MPN ATH-AD900x

Open-back headphones with 53 mm drivers deliver a wide 5 Hz to 35 kHz response and comfortable 3D wing support for long listening sessions

  • TypeHeadphone
  • Driver Unit53mm
  • Frequency Response5Hz-35KHz
  • Input Impedance38 ohms
  • Power Supply1,000 mW
  • Sensitivity100 dB/mW
  • Spacious open-back design creates natural soundstage
  • 53mm drivers with CCAW coils deliver wide 5Hz–35kHz response
  • 38-ohm impedance suits portable and desktop sources
  • 3D Wing Support adjusts automatically for pressure-free comfort
  • 0m cable with 3.5mm plug gives flexible connectivity

Audiophile Open-Air Headphones

The Audio-Technica ATH-AD900x is an open-back headphone built for critical listening. Its 53mm drivers with CCAW voice coils produce a wide 5Hz–35,000Hz frequency response. The lightweight honeycomb aluminum casing and self-adjusting 3D Wing Support housing remove pressure from the head. A 3.0m cable terminates in a 3.5mm plug.

Listeners Who Want Natural Spaciousness

The open-air design creates an airy soundstage suited to acoustic music, classical recordings and long mixing sessions where ear fatigue matters. The 38-ohm impedance works well with portable sources and desktop amplifiers alike. Buyers who need isolation from background noise or a closed-back presentation for recording booths should look at a different design.

Consistent Output Over Long Sessions

Large-aperture drivers and the open baffle dissipate heat naturally, so tonal balance stays stable during extended use. The CCAW voice coil keeps the moving mass low, preserving transient response without compression at 1,000mW input. The suspension system maintains a constant seal around the ears, preventing bass drift as the pads warm up.

Highlights

  • Spacious open-back design creates natural soundstage
  • 53mm drivers with CCAW coils deliver wide 5Hz–35kHz response
  • 38-ohm impedance suits portable and desktop sources
  • 3D Wing Support adjusts automatically for pressure-free comfort
  • 0m cable with 3.5mm plug gives flexible connectivity

Specifications

BrandAudio-Technica
ModelATH-AD900x
TypeHeadphone
Driver Unit53mm
Frequency Response5Hz-35KHz
Input Impedance38 ohms
Power Supply1,000 mW
Sensitivity100 dB/mW
Connector3.5mm
Cord Length3.0 m (9.8')
FeaturesAudiophile-quality open-air headphones deliver clear, natural vocal and instrumental reproduction, a smooth tonal balance, precise imaging and superlative dynamic range
Large-aperture 53 mm drivers and CCAW voice coils for superior sound reproduction
No sense of pressure on the ears, resulting in a completely natural sensation
3D Wing Support Housing offers a vibration-proof mechanism that provides comfortable support for a better listening experience
Extremely comfortable ear-fitting pads
Gold-plated stereo 1/8" (3.5 mm) connector with 1/4" (6.3 mm) adapter
Shipping weight1.36 kg
Package size432 × 356 × 127 mm

Questions about this item

What source output impedance should I pair with the 38 ohm input impedance for proper damping?

A source with an output impedance of 3.8 ohms or lower will provide a damping factor of at least 10:1 with the 38 ohm load, keeping bass control tight and frequency response flat.

Will the 3.0 m fixed cable reach my desktop amp if the jack is on the rear panel?

At 3.0 m (9.8 ft) the cable spans most desk-to-rear-panel distances; if your amp sits farther away you will need a 3.5 mm extension cable.

How can I confirm the 53 mm drivers are reproducing the full 5 Hz – 35 kHz range after setup?

Play a logarithmic frequency sweep from 5 Hz to 35 kHz; you should hear continuous output without gaps, sudden volume drops, or audible distortion at either extreme.

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