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The tuning of the BLON BL-03 sits fairly close to neutral aside from some boosted low end, giving instruments and vocals a very natural sound, which is well supported by a driving bass.

With excellent detail in the mid-range, these IEMs produce a clean separation of vocals and instruments, creating an accurate and high-resolution sound.

For the high end, we find an airy top end that gives space for high frequencies but sometimes leaves them decaying rapidly and limiting their overall presence. While the BL-03’s high end is never harsh, some may find the high end lacking a certain power and sparkle.


  • Driver: 10mm Carbon Diaphragm Dynamic Driver
  • Impedance: 32Ω
  • Sensitivity: 102dB/mW
  • Frequency range: 20Hz - 20kHz
  • Interface: 0.78mm 2 pin
  • Plug: 3.5mm gold-plated L-type
  • Cable length: 1.2m
  • Material: Composite Kirsite

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