Sony IER-M9 vs ThieAudio Monarch

  • Great for audio geeks
  • Good sound quality
  • Comfortable to wear
  • Not balanced, so may not be ideal for some listeners
  • May be difficult to hear lower frequencies
  • Great for high-end IEMs
  • Unique effect
  • Takes time to get
  • Good for music lovers
  • IEMs are worn 8 hours a day

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