SONY / IER-M9 Q

Everything is done to deliver the best performance on stage. We pursue the high quality sound and accurate reproduction of the original sound that artists require.

○Newly designed multi-BA system
Each of the many BA driver units has its own role and complements the sound.
Realizes the high sound quality required for IEM (inner ear monitor).

○Penta balanced armature driver unit
Excellent separation between vocals and each instrument, and allows you to accurately grasp the onset of the rhythm.
In addition to the optimal sound quality for monitoring, it also has high sound insulation, making it the best monitor earphones for live stages.
Five BA drivers are installed in the following configuration.
・Full range x 2
・Woofer
・Tweeter
・Super tweeter

○BA driver unit with magnesium diaphragm
The diaphragm of the BA driver that serves as the tweeter is made of highly rigid magnesium alloy.
The voice coil uses silver-coated copper wire with a high transmission ratio. The terminals are gold-plated to improve conductivity.
Even the smallest sounds are reproduced clearly.

○ Magnesium inner housing
The inner housing that secures the driver is made of high-rigidity magnesium alloy.
By firmly securing the driver and suppressing vibration, the clarity of the sound is improved.

○ Brass sound guide
Brass is used for the sound guide that passes from the driver to the outside.
By expanding the inner diameter while maintaining strength, we have achieved clear mid-to-high tones with a long sound.

○ Silver-coated OFC wire
The included cable uses a double-structure conductor with a pure silver coating on the surface of oxygen-free copper.
Signal transmission loss is minimized to the utmost, reducing sound deterioration.
We have achieved particularly smooth reproduction of high tones.

○ Non-magnetic gold-plated plug
We use plugs with non-magnetic plating (headphone side, device side). Compared to ordinary magnetic-plated plugs, it is less likely to obstruct the flow of current, resulting in clearer sound quality.

○ Φ4.4mm balanced standard plug
In addition to the general 3.5mm stereo mini plug cable, 4.4mm balanced plug cables can also be used.

High-quality balanced playback is possible with a Walkman or headphone amplifier that supports the 4.4mm balanced plug standardized by JEITA.

○Silk braid is used to reduce touch noise

○Detachable cable

○Noise blocking structure
A housing structure that thoroughly pursues sound insulation. It suppresses surrounding noise and prevents sound leakage.

○A total of 13 types of ear pieces are included
6 sizes of ""Triple Comfort Ear Pieces"" are included, which combine silicone rubber of different hardness with silicone rubber material.
Soft, highly sound-insulating, and comfortable to wear.
It is not tiring even when worn for a long time, and can be washed with water.
7 sizes of hybrid ear pieces are included. You can choose the ear piece that suits you from a total of 13 types of ear pieces.

○Hard case included

○Cable holder included
A cable holder is included to reduce the load on the cable and hanger.
Separation is provided so that the housings do not collide with each other, so the housing will not be scratched.

◇Headphone section
■Type: Closed penta balanced armature
■Driver unit: Penta balanced armature
■Sensitivity: 103dB/mW
■Magnet: Neodymium
■Playback frequency band: 5Hz-40,000Hz
■Impedance: 20Ω (at 1kHz)
■Maximum input: 100mW (IEC)
■Cable length: Headphone cable (approx. 1.2m, silver-coated OFC wire, ear hanger, non-magnetic gold-plated L-shaped stereo mini plug), balanced connection headphone cable (approx. 1.2m, silver-coated OFC wire, ear hanger, non-magnetic gold-plated L-shaped balanced standard plug)
■Cable type: Y-type
■Input plug: Non-magnetic gold-plated L-shaped stereo mini plug, non-magnetic gold-plated L-shaped balanced standard plug
■Weight: Approx. 11g
■Accessories: Warranty, clip, carrying case, instruction manual