Ostry KC09 IEMsearch

Ostry KC09 IEM

Ostry KC09 IEM

(10 reviews)
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Titanium, Leather & Detachable Cables

A new IEM from Ostry, the maker of the highly regarded KC06 and KC06A, the KC09 delivers neutral sound and handsome aesthetics. It features a single 10-millimeter dynamic driver inside a housing made of hand-polished Seiko titanium and leather: an uncommon combination of materials in a universal IEM of this price. The detachable MMCX cables use 0.04-millimeter high-purity, multi-strand OFC (or oxygen-free copper) and end in a ⅛-inch three-pin plug. Built for long-term comfort, the KC09 is angled at 15 degrees to match the angle of your ear cavity. A range of ear tips help you find the ideal fit.

Note: This drop is limited to 200 units.

Ostry KC09 IEM
Ostry KC09 IEM
Ostry KC09 IEM
Ostry KC09 IEM
Ostry KC09 IEM


  • Ostry
  • Housing: Seiko titanium and leather
  • Color: Black and silver
  • Driver unit: Single 10mm dynamic CCAW
  • Diaphragm: EBT (based on eardrum bionic technology)
  • Sensitivity: ≥ 101 dB at 1 kHz
  • Rated impedance: 32 ohm +/- 15%
  • Frequency response: 20 Hz–20 kHz
  • Distortion: < 1% 101 dB at 20 μpa
  • Channel difference: < 1.5 dB at 1kHz
  • Rated power: 10 mW
  • Cable: 4.3 ft (1.3 m) detachable MMCX cable
  • Plug: ⅛ in (3.5 mm) 3-pin plug


  • Pair of tuning ear tips
  • 2 pairs of bowl-shaped silicone ear tips
  • 3 pairs of bullet-shaped silicone ear tips


All orders will be shipped by Massdrop.

Estimated ship date is Sep 21, 2018 PT.

After the drop ends, payment will be collected and the group’s order will be submitted to the vendor up front, making all sales final. Check the discussion page for updates on your order.