Sony IER-M9 In-ear Monitor Headphones



Discover a new realm of musical expression, in the studio and on the stage with IER-M9 In-ear monitor headphones designed for musicians...

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$1,699.95

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

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 super tweeter. Sony’s original T-shaped Balanced Armature directly drives the diaphragm for a more linear motion and clean, faithful high notes.

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
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.

Beautifully designed for accurate tonal balance
With an integrated magnesium inner housing and optimised sound paths, the IER-M9 headphones deliver balanced tones and every nuance of your performance.

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
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
A 4.4mm standard balanced connection cable separates left and right sound signals completely, which minimises cross-talk that results in sound deterioration.

  • Triple Comfort ear buds:SS,S,MS,M, ML,L
  • Hybrid Silicone ear buds:SS,S,MS,M,ML,L,LL
  • 3.5mm MMCX Cable
  • 4.4 Balanced MMCX Cable
  • Carrying case
  • Cable holder
  • Cleaning cloth
  • Clip
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