Sony

Sennheiser

IER-Z1R

HD 820

Wired Headphone Specification

Wired Headphone Specification

In Ear

Over Ear

Dynamic

Dynamic

12 mm

56 mm

40 Ohms

300 Ohms

103 dB / mW

103 dB / mW

3Hz - 100KHz

6Hz - 48KHz

NA

500 mW

NA

Noise Cancelling

Black, Silver

Black

3.5 mm

3.5 mm Stereo Jack Plug

4.4 mm Standard Balanced Connection Cable

XLR-4 Balanced Cable

26 GM

360 GM

Expertly crafted in Japan.
In pursuit of perfect sound.
For deep bass and fine details.
Naturally controlled acoustics.
Balanced connection available.
A perfectly straight sound path.
Faithfully reproduce every note.
Originally designed to make you feel.
Silk insulator and non-magnetic plating.
Silver-coated oxygen-free copper cable.
Quality cable for preserving signal purity.
Audio grade capacitor without distortion.
Sound Space Control for wide sound space.
Refined-phase structure for extensive sound.
Hear everything with a frequency response to 100 kHz.
Refined-phase structure for accurate acoustic blending.
HD hybrid driver system ( 2 dynamic 1 Balanced Armature ).
4.4mm balanced, and conventional 3.5mm, connection cables supplied.
Optimized for High-Resolution Audio reproduction.Specific uses for product : Music.
Product Note : If the size of the earbud tips does not match the size of your ear canals or the headset is not worn properly in your ears, you may not obtain the correct sound qualities or call performance. Change the earbud tips to ones that fit more snugly in your ears.

Country of Origin: Germany.
New reference for closed back headphones.
56mm Ring Radiator dynamic transducer system.
Closed, circumaural dynamic stereo, headphones.
The new audiophile standard for closed-back headphones.
Enjoy audiophile sound quality, whether at home or on the move.
Natural hearing experience - realistic sound field with minimal resonance.
Ultra-ergonomic adjustable metal headband with inner damping element.
Acoustic absorber system prevents frequency masking for unheralded detail.
Concave Gorilla Glass reflectors deliver impressive spatial sound reproduction.
Luxuriously comfortable microfiber ear and headband padding on key contact points.
Developed in Germany and precision-built at Sennheiser’s state-of-the-art Ireland plant
Glass covered ear cups make the transducer visible, this special design innovation reflects the sound from the transducer to an absorber to minimize distortion.