Product view 1
Product view 2
Product view 3
Product view 4
Product view 5
Product view 6
By Sony

IER-M9

Wired IEMs

Contact us

In-store demo

Available

Stock availability

Available

  • Five balanced-armature drivers

    Penta BA array with a magnesium-diaphragm super tweeter.

  • Magnesium construction

    Rigid inner structure and lightweight outer housing.

  • Stereo and balanced cables

    Detachable 1.2 m leads with conventional and 4.4 mm plugs.

  • Thirteen ear-tip options

    Triple Comfort and Hybrid Silicone sizes support a secure seal.

Product details

The Sony IER-M9 is a wired in-ear monitor with five balanced-armature drivers per earpiece. Its Penta BA arrangement includes a magnesium-diaphragm super tweeter, developed for detailed monitoring on stage and personal listening.

Purpose-built armatures and magnesium structure

Sony’s T-shaped armature directly drives the diaphragm. An integrated magnesium inner housing holds the driver units in place, while a short, wide magnesium sound path manages the route to the ear. The lightweight magnesium-alloy outer housing provides a durable enclosure.

Fit and detachable connections

Pre-formed ear hangers support a secure over-ear fit. Six sizes of Triple Comfort tips and seven sizes of Hybrid Silicone tips provide a wide choice of seals. Two detachable silver-coated oxygen-free copper cables offer conventional stereo and 4.4 mm balanced connections, each around 1.2 metres long. A carrying case, cable holder, clip and cleaning cloth are included.

Specifications

Design
Closed wired in-ear monitor
Driver system
Penta balanced armature; five drivers per earpiece
Super tweeter
Magnesium diaphragm
Armature structure
Sony T-shaped direct drive
Housing
Magnesium-alloy exterior; integrated magnesium inner housing
Frequency response
5 Hz–40 kHz
Impedance
20 Ω at 1 kHz
Sensitivity
103 dB/mW
Cables
Detachable Y-type; silver-coated OFC
Cable length
Approximately 1.2 m each
Terminations
Stereo mini plug; 4.4 mm balanced
Plugs
L-shaped; non-magnetic gold plating
Fit
Pre-formed ear hangers
Ear tips
6 Triple Comfort sizes; 7 Hybrid Silicone sizes
Included accessories
Carrying case; cable holder; cleaning cloth; clip

Dimensions

Weight without cable
Approximately 11 g