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  1. Audio
  2. Headphones
  3. Sound Monitoring Headphones

IER-M9 In-ear Monitor Headphones

Model: IERM9
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Find a Qualifying Product

Find a qualifying product that you want Sony to price match from a local retailer. Make sure the product is identical to our product (model number and colour). The price must be current on the day of request and available to purchase at that price. The retailer must have a local business number (ABN or NZBN) and be registered for Goods and Services Tax ("GST").

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Delivery Information

Please note, we cannot deliver to PO Boxes, Parcel Lockers or international destinations and currently authority to leave (ATL) at doorsteps or un-signed is not available.

Delivery Australia

Australia

Regular deliveries to NSW, QLD and VIC metro areas should be received within 1-5 business days. For ACT, SA, WA, TAS, NT metro and other rural areas, orders should be received within 1-7 business days.

Delivery New Zealand

New Zealand

Regular deliveries to Metro areas should be received within 1-5 business days. For rural areas and Stewart Island, orders should be received within 1-7 business days but may dependant on local carriers.

Delivery Costs

Delivery Fees

Some orders may be charged a small delivery fee as part of the convenience of getting your order delivered to your doorstep. See checkout for final costs.

Delivery Sale Periods

Sale Periods

Delivery delays may be experienced during sale periods due to high demand.

  • For returns, see our returns information for more details.
  • Shipping is only available to customers within NSW, VIC, ACT, QLD, SA, WA, NT, TAS only for orders on store.sony.com.au and to North Island, South Island, Stewart Island addresses only for orders on store.sony.co.nz
  • For items over 20kg, Sony (or an authorised logistics provider) will contact to arrange a delivery time. Certain factors such as size, shipping address or volume of deliveries may delay shipments.
  • Pick up and collection of orders are not available.
  • Delivery is currently during standard business hours only.

Faithfully reproduce every performance

With a Penta Balanced Armature system including magnesium super tweeter, integrated magnesium inner housing and an optimized sound path, these stage monitor headphones faithfully reproduce even the most subtle sounds and emotions.

Features

In-ear monitor headphones with 5x Balanced Armature (BA) system, magnesium alloy diaphragms and preformed ear hangers.
In-ear monitor headphones with 5x Balanced Armature (BA) system, magnesium alloy diaphragms and preformed ear hangers.
  • Penta BA system with super tweeter
  • Tuned to monitor the performance on stage
  • Light, durable magnesium alloy outer housing

Key Features

Penta Balanced Armature system for optimal stage sound

Penta Balanced Armature system for optimal stage sound

For clean high notes, natural tones and the pure emotion behind every performance, the IER-M9 has a Penta BA system including a magnesium diaphragm super tweeter. Sony's original T-shaped Balanced Armature directly drives the diaphragm for a more linear motion and clean, faithful high notes.

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

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.

Silver-coated OFC

Silver-coated OFC

Silver-coated oxygen-free copper wire minimises resistance and signal-transmission loss. The result is less sound degradation, finer detail and smoother treble sounds.

Silk braid and non-magnetic undercoat plug

Silk braid and non-magnetic undercoat plug

The IER-M9 uses silk braid as a cable insulator. This fibre works as an absorber against vibration and prevents rustling or bumping noises when you touch the cord. The gold plating of the plug has a non-magnetic undercoat which transfers the signal preserving subtle nuances.

Detachable cable

Detachable cable

The cable is fully detachable so you can replace it if needed, or fine tune your monitor sound through a different cable.

Pre-formed ear hanger for easy positioning

Pre-formed ear hanger for easy positioning

The IER-M9 In-ear headphones stably fit your ears through the universally shaped ear hanger. With firm fit and optimal housing shape, each ear bud stays in the right position.

13 variations of earbuds

13 variations of earbuds

Our earbuds come in thirteen variations - six triple comfort and seven hybrid silicon. So you can find a snug fit for all kinds of ear shape. Combining hard silicone rubber and specially-developed formed silicone, they perfectly match sound with stability and are comfortable to wear for long lengths of time.

Light, durable magnesium outer housing

Light, durable magnesium outer housing

Own the stage and the moment with the light, durable magnesium outer housing of the IER-M9 In-ear headphones. Stably fit and durable against knocks or accidents.

Stable fit

Stable fit

The IER-M9 are designed to stay firmly in place with a snug fit for all ear sizes. With firm fit and optimal housing shape, each earbud stays in the right position, even while moving on stage.

Discover a new realm of musical expression

Discover a new realm of musical expression

On stage, the IER-M9 In-ear monitor headphones authentically reproduce raw emotion and musical nuance.

Faithfully reproduce every performance

Faithfully reproduce every performance

With a Penta Balanced Armature system including magnesium diaphragm super tweeter, integrated magnesium inner housing and an optimised sound path, these stage monitor headphones faithfully reproduce even the most subtle sounds and emotions.

Magnesium diaphragm super tweeter

Magnesium diaphragm super tweeter

The IER-M9 super tweeter diaphragm is made of light weight and rigid magnesium alloy to deliver the fast dynamic transient of performance. The unique BA unit design also benefits from extremely low resonance thanks to high internal loss. Internal wiring is upgraded with a new silver-coated copper voice coil and gold-plated terminals, faithfully reproducing sound without sacrificing even micro signals so pitch, harmonics, and emotion are portrayed.

Audio grade film capacitor for less distortion

Audio grade film capacitor for less distortion

Our custom audio grade film capacitor in the cross-over circuit delivers much lower distortion. The audio grade capacitor of the IER-M9 delivers fine detail sound. Plus, audio grade solder also helps minimise any loss in signal path.

Integrated magnesium inner housing to reduce vibration

Integrated magnesium inner housing to reduce vibration

A highly rigid housing keeps the BA units firmly in place, helping to eliminate vibration and keeping sound clear without losing even the most minute detail in your sound.

Optimised sound path

Optimised sound path

A wide and short sound path made of magnesium alloy reduces frequency peaks and dips, to give a monitor sound you can rely on for critical listening accuracy.

Balanced connection available

Balanced connection available

The IER-M9 In-ear monitors come with a 4.4mm standard balanced connection cable which separates left and right sound signals completely, unlike conventional headphone cables where both channels share a ground wire. This minimises cross-talk that results in sound deterioration.

Designed with professionals

Designed with professionals

We developed these in-ear monitor headphones cooperating with professional musicians and live-sound engineers. Their opinions are reflected in this product.

Finer details and musical expression captured without loss

Silver-coated oxygen-free copper cables, a natural silk braid cable insulator with non-magnetic undercoat plug and a 0.17" standard balanced connection cable give less sound degradation, finer detail, and faithfully reproduced musical expression.

  • Silver-coated OFC

    Silver-coated, oxygen-free copper wire minimizes resistance and signal-transmission loss. The result is less sound degradation, finer detail, and smoother treble sounds.

  • Silk braid insulator and non-magnetic plug

    Vibration is absorbed by the silk braid cable insulator to minimize rustling when the cord is touched. A gold-plated plug with non-magnetic undercoat preserves signal purity.

  • Detachable cable

    The cable can be replaced if needed, or to fine-tune your monitor sound through a different cable.

Specifications

General Features

    • Sensitivities (dB/mW) 103dB / mW
    • Plug L-shaped non-magnetic gold-plated stereo mini plug, L-shaped non-magnetic gold-plated balanced standard plug
    • Impedance (Ohm) 20ohms(at 1kHz)
    • Headphone Type Closed, Penta Balanced Armature
    • Frequency Response (Hz) 5Hz- 40000Hz
    • Driver Unit Penta Balanced Armature
    • Cord Type Y-type
    • Cord Length Approx. 1.2m, silver-coated OFC strands, ear hanger, L-shaped non-magnetic gold-plated stereo mini plug, Approx. 1.2m, silver-coated OFC strands, ear hanger, L-shaped non-magnetic gold-plated balanced standard plug

Size and Weight

    • Width (cm) 9.00
    • Height (cm) 16.50
    • Weight (kg) 0.84
    • Carton Width (cm) 19.00
    • Carton Height (cm) 18.00
    • Carton Weight (kg) 1.95