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Koss UR40 vs Superlux HD681

    Koss UR40 Headphones
    Koss UR40
      7.36 in
      7.87 in
      Superlux HD681 Headphones
      Superlux HD681
      Available colors
      Editiorial reviews
      2
      2 editorial reviews
      I'll write up a full review later, but these circumaural open headphones are just UNBELIEVABLE!   A recent pair of on ear headphones had impressed me with their sound quality, but were a major letdown in terms of comfort (lack thereof). Therefore, I began a search for potentially great...Read more
      The Koss UR-20 are below-average headphones that perform poorly in most of our test categories. They are moderately comfortable but have a weak, unexciting sound...Read more
      Read editorial reviews
      7
      3.9 out of 5
      3 user ratings
      5 stars
      		0 %
      4 stars
      		100 %
      3 stars
      		0 %
      2 stars
      		0 %
      1 stars
      		0 %
      Read editorial reviews
      User rating
      37
      4.1 out of 5
      37 user ratings
      5 stars
      		32 %
      4 stars
      		43 %
      3 stars
      		24 %
      2 stars
      		0 %
      1 stars
      		0 %
      110
      3.7 out of 5
      110 user ratings
      5 stars
      		33 %
      4 stars
      		23 %
      3 stars
      		26 %
      2 stars
      		14 %
      1 stars
      		1 %

      Full Comparison

      Units:

      Technical details

      Koss UR40Koss UR40
      Superlux HD681Superlux HD681
      Sound outputStereoStereo
      StyleOver-EarOver-Ear
      Connectivity technologyWiredWired
      Headset (integrated/enclosed microphone)nono

      Design

      Koss UR40Koss UR40
      Superlux HD681Superlux HD681
      Colour of product
      • Black
      • Black,Grey
      • Black,Silver
      • Silver
      • Black
      • Black,Red
      • Grey
      Acoustic designClosedHalf opened
      Attachment typeHeadbandHeadband

      Dimensions

      Koss UR40Koss UR40
      Superlux HD681Superlux HD681
      Weight6.1 oz9.74 oz

      Sound

      Koss UR40Koss UR40
      Superlux HD681Superlux HD681
      Impedance60.0 Ω32.0 Ω
      Frequency range15 - 2200010 - 30000
      Driver technologyDynamicDynamic
      Total harmonic distortion (THD)0.2 %0.25 %

      Connectivity

      Koss UR40Koss UR40
      Superlux HD681Superlux HD681
      Cable length1.22.5
      Type of connector3.5mm3.5mm
      USBnono
      Detachable cablenono

      Power

      Koss UR40Koss UR40
      Superlux HD681Superlux HD681
      Battery operatednono

      Pros & Cons

      Pros
          Cons

              Often compared with Koss UR40

              Koss UR40 Headphones
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              Koss UR40 Headphones
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              KossUR40
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              Koss UR40 Headphones
              Sennheiser PX-100
              KossUR40
              SennheiserPX-100

              Often compared with Superlux HD681

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