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In the BLON BL-01 we find a slightly boosted bass that emphasizes the mid-bass more than the sub-bass, providing a punchy and lively bottom end that sits on the warm side of neutral. Although these earbuds aren’t quite fit for a basshead, they provide some nice punch and body -- especially at this price tag.

The upper bass frequencies do have some slight bleed into the low-mids, which can have the effect of colouring the low-mids with the warmth of the bass tuning. This colouring works well for certain types of music.

For mids, the BL-01 does suffer slightly in its lower mids, which are a bit recessed compared to the upper mids. Thankfully, the upper mids manage to stay present and cut through the mix with a slight boost.

While the mids may at times feel slightly recessed, they do not lack detail and offer ample separation for instruments and vocals, letting you take in the full definition of the track you’re listening to. 

Treble on the BL-01 keeps things inoffensive and never peaks into harshness. It offers decent space for cymbals and other high frequencies to bloom, though the top end might lack some fine details due to the relaxed treble tuning.


  • Driver: 10mm Biology Fiber Diaphragm Driver
  • Impedance: 16Ω
  • Sensitivity: 102dB/mW
  • Frequency range: 20Hz - 20kHz
  • Interface: 0.78mm 2 pin
  • Plug: 3.5mm
  • Cable length: 1.2m