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The Logitech Ultimate Ears SuperFi 4 is a pair of middle line earphones that specialize in noise-isolation.

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The Logitech Ultimate Ears SuperFi 4 is a pair of middle line earphones that specialize in noise-isolation. The earphones produce a seal in your ear canal by utilizing interchangable silicone cushions that attach to the ends of the earphones. The different sized cushions create a tight fit in the ear canal to block outside noise so only the earphones sound directly enters your ear. While most other noise-isolation earphones provide 16 dBs of noise-isolation, the Logitech Ultimate Ears SuperFi 4 provides 26 dBs. There is also an additional version that includes a microphone (SuperFi 4vi) for use with a cell phone. The microphone allows switching between listening to music and answering phone calls with one button.

Specifications and Features
  • optional microphone; -40 dBV sensitivity
  • includes 10 ear cushions
  • includes storage case
  • standard 3.5mm input connector; gold plated
  • 46 inch cable length
  • 26 dBs noise isolation
  • precision, balanced armature speakers
  • one year warranty
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