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Sony IER-M9


Released Aug 9, 2018

What's in the box

  • Triple comfort ear buds: SS, S, MS, M, ML, L
  • Hybrid silicone ear buds: SS, S, MS, M, ML, L, LL
  • Carrying case
  • Cable holder
  • Cleaning cloth
  • Clip


If you’re a musician looking for IEMs that can accurately represent your performance, these buds are a good way to go. And if you’re an audiophile looking for something neutral or relatively uncolored for critical listening, the M9 are a great choice as well. But if you're looking for a well-balanced headphone that also has a little panache, I'd check out the Empire Ears Phantom, the Campfire Andromeda and the Noble Audio Kaiser Encore.
(Feb 2019)

the IER-M9s are a very fine pair of IEMs which showcase the engineering prowess of Sony – the ability to bring such a finely detailed IEM to market. However, there is a slight lack of dynamism and fun to the sound. Paired with the right DAP, this may not be an issue. However, there are many premium IEMs at around the same price point which deserve audition along with the M9s to see what suits your ears best.
(Mar 2019)

If you’re looking for an all-around detailed sound that keeps music fun and engaging, the Sony IER-M9 won’t let you down. With it’s robust sound profile and solid soundstage, this earphone offers a rare listening experience that cannot be discounted – especially at the $1499 retail price.
Major HiFi
(Feb 2019)


Wear style
Fits in-ear
Custom fit IEM
Cable wear style: Around-the-ear
Suitable usage: Home
Plug type
Wired connection
Cable type
Detachable cable
Double entry cable
Battery powered
No battery required
Battery replaceable
Non-replaceable battery
Weight (g)
Weighs 11g
Impedance (Ω)
20 ohms impedance