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  • Ultimate universal earphone
  • Quad BA drivers in two-way crossover
  • Wide soundstage
  • Attenuation of up to 26dB
  • Replaceable earwax filter
  • Comes with hard case

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Product Details

Technical Features

The SD4 offers a total of 4 drivers per ear, which are fired by a 2-way crossover, providing tremendous reserves in the bass reproduction, linear centers and finely-resolved highs. The perfect reproduction of frequencies and spatialness offer musicians, sound engineers and hi-fi connoisseurs a sound experience of a special kind. The earpiece offers noise attenuation of approximately 26dB, providing exceptional isolation for a more immersive listening experience.


InEar development engineers have created an IEM that fits almost perfectly into every ear and is also hardly distinguishable externally from a custom IEM. The basis for the housing design was created by digital 'overlapping' of over 500 different ear shapes, as well as in-house prototype construction. Numerous tests on the 'living ear' refined the design, resulting in an earphone so universal it fits almost any ear. The cables used correspond to the worldwide standard for InEar monitors, are interchangeable and run safely behind the ear thanks to the inserted bending wire.

The SD4 and SD4s have the same technical data, but the SD4s has a smaller shell, offering a more comfortable fit for smaller ears

Driver  Quad BA drivers in two-way crossover 
Frequency Range           20Hz - 19kHz
Impedance 22 ohms
Sensitivity 120dB
Noise Attenuation Approx 26dB
Wearing Style Over-the-ear
Cable 140cm
3.5mm headphone jack 
In The Box SD4 IEMs
4 pairs of silicon earbuds
Gold-plated adapter (3.5mm to 1/4")
3 cleaning cloths
Hard case 

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