Sony IER-M9 In-ear monitor headphones

In-ear monitor headphones for a new realm of musical expression with advance audio technologies which includes Sony’s 5x unique Balanced Armature drivers, including magnesium alloy diaphragms and gold-plated terminals. Every musical nuance is authentically reproduced. Built with advanced responsiveness to detect the most subtle of music nuances, these headphones are unlike any other.

$1,499.99

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5x Balanced Armature (BA) units for optimal sound design
For clean high notes, rhythm, pitch and the pure emotion behind every nuanced performance, the IER-M9 has 5x Balanced Armature (BA) Driver Units, including a Magnesium alloy super tweeter.
Sony's original design Balanced Armature (BA) Driver units
The unique T-shaped Balanced Armature directly drives the diaphragm for a more linear motion and clean, faithful high notes.
Magnesium alloy super tweeter
The IER-M9 super tweeter diaphragm is made of light weight and rigid Magnesium alloy to deliver the responsiveness required for describing subtle music nuance. The unique BA unit design also benefits from extremely low resonance thanks to a high internal loss. Internal wiring is also upgraded, with a new silver coated copper voice coil and gold-plated terminals, to faithfully reproduce sound without sacrificing even micro signals – so pitch, harmonics, and emotion are portrayed.
Audio grade film capacitor for less distortion
Sony’s custom audio grade film capacitor in the cross-over circuit delivers much lower distortion than ceramic capacitors. Suppressing vibration and electric interference, the audio grade capacitor of the IER-M9 In-ear headphones delivers fine, relaxed sound. Plus, audio grade solder also helps minimize any loss in signal path.
Integrated Magnesium alloy inner housing
The BA units are held firmly in an integrated, high-rigidity housing. This helps to eliminate vibration and keeps sound clear and clean without losing even a micro nuance of sound.

Footnotes

¹ 4K upscaling requires a 4K projector or 4K TV. ² Requires devices connected to the same wireless home network. ³ Broadband speed of at least 2.5 Mbps recommended (10 Mbps for HD). Content subject to change and may require fees. ⁴ iPod® and iPhone® support is limited to the following players: iPod touch®, iPod classic®, iPod nano® 1st, 2nd & 3rd generation, iPod® 4th & 5th generation & iPod mini and iPhone 3G, 3Gs and 4G models. ⁵ Requires HDMI® cable sold separately. ⁶ Requires HDTV with equivalent display and HDMI® cable sold separately. ⁷ Requires HDMI® cable and LPCM capable receiver. ⁸ Requires HDTV and HDMI® cable sold separately. ⁹ Syncs with BRAVIA® Sync or Theatre Sync™ products. ¹⁰ May require additional accessories. Check with your authorized Control4® dealer for details. ¹¹ Requires capable HDTV / video source and HDMI® cable sold separately. ¹² Requires 3D content, 3D glasses, and HDMI® cable (at least 10.2 Gbps). ¹³ Simulated 3D image will vary based on source content. ¹⁴ Requires an optional license purchase from an authorized Control4® dealer. ¹⁵ Requires home network and one device on network to be set up as a DLNA server. Streaming content, copy-protected content and certain formats are not supported. ¹⁶ Requires active internet connection and devices connected to the same WiFi® network. ¹⁷ Compared to normal viewing. Based on a 55-inch LED TV with Picture Setting Standard. ¹⁸ As of January 1, 2012. ¹⁹ Streaming content, copy-protected content and certain formats are not supported. ²⁰ Largest, highest resolution consumer television, as of August 2012. ²¹ 65 Watts total power (20+20+12.5+12.5). ²² '4K' is a resolution standard commonly used in the digital cinema industry that refers to images with a horizontal resolution of approximately 4,000 pixels. The actual panel resolution of 84" XBR-X900 is 3,840 x 2,160 pixels (in 16:9 aspect ratio). This corresponds to the so‐called "QFHD" (Quad Full High Definition) display standard. In practice, this is equivalent to the widely-accepted definition of "4K" resolution. ²³ 1.5m is recommended viewing distance for 4K (3840 x 2160) content with XBR-84X9000 to enjoy the most immersive experience. ²⁴ Ethernet connection required. Fees may apply for 4K networked video service. ²⁵ PS3 system and SimulView™ glasses sold separately. ²⁶ Actual panel resolution of XBR‐X900A 4K Ultra HD TV is 3,840 x 2,160 pixels (in 16:9 aspect ratio). HDTVs have a panel resolution of 1,920 x 1080 pixels. ²⁷ Simulated 4K image will vary based on source content. ²⁸ Ethernet connection required. Fees may apply for 4K networked video service. ²⁹ Broadband speed of at least 2.5 Mbps recommended (10 Mbps for HD). Content subject to change and may require fees. Wireless connectivity requires 802.11 home network (802.11n recommended). Skype requires CMU-BR100 or CMU-BR200 camera sold sep. Subject to Skype’s terms and conditions. ³⁰ Requires PS3 system, PlayMemories Studio™ software and HDMI® cable (at least 10.2 Gbps) sold separately. ³¹ Requires compatible Near Field Communication (NFC)-enabled Xperia™ smartphone. Certain formats are not supported. The video quality may be degraded due to environmental interference. ³² Requires smartphone with Wi-Fi® certified Miracast™ technology. Certain formats are not supported. The video quality may be degraded due to environmental interference ³³ Actual panel resolution of XBR‐X850A 4K Ultra HD TV is 3,840 x 2,160 pixels (in 16:9 aspect ratio). HDTVs have a panel resolution of 1,920 x 1080 pixels. ³⁴ Requires compatible Near Field Communication (NFC)-enabled Xperia™ smartphone. Certain formats are not supported. The video quality may be degraded due to environmental interference. ³⁵ 40 Watts total power (10+10+10+10)

In-ear monitor headphones for a new realm of musical expression on stage.

Sony IER-M9 In-ear monitor headphones

5x Balanced Armature (BA) units for optimal sound design

Sony's original design Balanced Armature (BA) Driver units

Magnesium alloy super tweeter

Audio grade film capacitor for less distortion

Integrated Magnesium alloy inner housing