audio technica / ATHANC9

These are noise-canceling headphones.

Active Noise Cancelling Headphones
These headphones use two microphones and a high-precision ANC circuit to reduce environmental noise by up to approximately 95%. High-precision noise cancellation is achieved with two microphones that employ both feedback and feedforward techniques. These headphones feature both a feedback microphone located inside the housing for noise cancellation and a feedforward microphone located outside the housing for external noise reduction. These are driven by a high-precision ANC (active noise cancelling) circuit to reduce environmental noise by up to 95%. Three tri-level cancellation options allow you to select the optimal noise reduction effect for different situations, such as on an airplane or while studying. Airplane Mode: Recommended for noisy environments such as airplanes, trains, and other vehicles. Office Mode: Recommended for environments where noise from office equipment, air conditioning, and other sources is a constant presence. Study Mode: Recommended for situations where you need to concentrate better, even in low-noise environments. )
■ Memory foam material is used for the headband and ear pads, ensuring a comfortable fit even over long periods of time.
■ The dedicated smartphone headphone cord allows you to answer/end calls, play/pause music and videos*.
Can be used with smartphones that support a 4-pole plug. Depending on your smartphone, you may need to connect the included conversion cord.
*Cannot be used with some smartphones, such as EMOBILE. Even compatible models may have some operational limitations. Please be sure to check compatible models.
■ Equipped with a through function that allows normal use even when the battery runs out.
■ Comes with a dedicated case for carrying accessories such as an airline adapter.

Specifications:
■Type: Closed dynamic
■Driver: φ40mm
■Frequency Range: 10-25,000Hz
■Noise Cancellation Level: Maximum -30dB
■Sound Output:
・100dB/mW (with noise cancellation),
・100dB/mW (without noise cancellation)
■Impedance:
・100Ω (with noise cancellation),
・32Ω (without noise cancellation)
■Weight: Approx. 220g (excluding batteries and cord)
■Jack: φ3.5 gold-plated stereo mini jack
■Power Source:
・AAA alkaline batteries or
・One AAA nickel-metal hydride rechargeable battery
■Battery Life:
・Approx. 30 hours (with AAA alkaline batteries) Battery life: Approximately 15 hours (using AAA nickel-metal hydride batteries)
■Accessories:
- 1.2m dedicated headphone cord (φ3.5 gold-plated stereo mini L-type)
- 1.2m dedicated smartphone headphone cord (remote controller with microphone/φ3.5 gold-plated 4-pole stereo mini L-type plug)
- Smartphone conversion cord
- 6.3mm gold-plated stereo conversion adapter
- Airplane conversion adapter (*)
- AAA alkaline batteries (for testing)
- Dedicated case (with pouch)
(*) May not be compatible with some aircraft onboard equipment.
(*) This adapter is designed specifically for this unit. Do not use with other headphones.