HiFiMAN RE-400 Waterline In-Ear Headphones


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The RE-400 Waterline by HiFiMAN is a premium quality, high-performance In-Ear Monitor (IEM) that sets the standard for others to follow. 


  • Featuring advanced ergonomics for superb fit, and premium materials such as Titanium Diapharagm, Neodymium magnet and OFC Copper cabling

  • RE-400 represents best-in-class performance and comfort.

  • Driver: 8.5mm

    Impedance: 32  OHM+/- 3.2

    Sensitivity: 102dB/1mW

    Rated power: 10mW

    Maximum power: 30 mW

    Frequency response: 15 ~22 KHZ