Tech of the week
Sony’s latest premium headphones MDR-Z7M2 features wide frequency response, dynamic range
KUALA LUMPUR: Sony announced the MDR-Z7M2, the successor to the highly acclaimed MDR-Z7 headphones.
Evolving the ‘Sony Sound’, it inherits MDR-Z1R’s technology from the Signature Series such as the Fibonacci-patterned grill and a 4.4mm balanced connection cable in the box. The MDRZ7M2 features a wide frequency response and dynamic range and a linear plane wave, offering listeners realistic reproduction of ‘air’ around musical instruments and voices; a three dimensional and spatial sound experience existing in a live music space.
With the usage of a 70 mm HD driver along with aluminium coated Liquid Crystal Polymer diaphragm, in which the dome is upsized and its profile is optimised, the MDR-Z7M2 headphones provides refined music reproduction for listeners.
The MDR-Z7M2 also features newly developed driver units adapted from the MDR-Z1R including newly improved aluminiumcoated Liquid Crystal Polymer diaphragms for natural sound with low coloration at mid-high range.
According to Sony, the dome of the diaphragm has been upsized and its profile optimised, which enables clear sound at mid-low range, and brilliant sound at mid-high range. It noted that the driver unit contains a larger magnet (double that the volume as compared to MDRZ7), resulting in stronger driving power and hence, sharpened music clarity.
“The introduction of a Fibonacci-patterned grill made of stiff resin to achieve both thinness and strength whilst minimising sound damping from the grill in the ultra-high frequencies resulting in smooth sound reproduction across all frequencies,” it added.
In addition, Beat Response Control, a special acoustic port on the housing, controls air flow behind the driver and optimises diaphragm movement when reproducing low frequencies.
At the same time, the feature also improves the transient characteristics in bass sounds and delivers the rhythm in music accurately.
Other features in the MDR-Z7M2 include the use of non-lead solder and corson alloy contacts in the jack. Sony- developed dedicated audio grade solder was also used to minimise loss in the signal path and ensure purity of contact. Corson alloy (a type of copper alloy) is an ideal material for electric contacts of jacks due to its low resistance value and high durability.
To improve the wearing comfort of the MDR-Z7M2, it features three dimensional sewing, ergonomically shaped ear pads, and aluminum alloy hanger and slider for light weight.
These changes ensure a higher level of comfort even during long periods of wear and less pressure on the head. Three- dimensional sewing on the ear pads ensures an ergonomic shape designed to fit the unevenness of the head and gives even pressure throughout the area. It also reduces sound leakage by increasing air- tightness, delivering powerful heavy bass to the listener.
Aside from that, soft urethane foam cushion with moisture absorbing and releasing characteristics were chosen for the surface of the ear pads to reduce the feeling of stuffiness and provide a comfortable extended listening experience.
A synthetic leather headband with aluminum alloy hanger and slider ensures the MDR-Z7M2 is light weight yet durable for years to come. A special anodising treatment process resulted in increased hardness of the hanger while minimising scratches caused by daily use.
Special attention was paid to designing an enfolding structure for the MDR-Z7M2 where ear pads slant inwards due to side pressure during wear.
This created a tighter air seal which enhanced deep bass production and minimised sound leakage, providing the listener with improved comfort and stability during wear.
The MDR-Z7M2 also features silent joint mechanism that minimises mechanical noise caused by the movement of joints ensuring a quiet listening experience for the most discerning listener.
The Sony MDR-Z7M2 will be available in Malaysia from mid-October 2018.