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Compare 3 products

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Koss SportaPro Headphones
Koss SportaPro
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Koss UR40 Headphones
Koss UR40
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Sennheiser PX-100 Headphones
Sennheiser PX-100
Available colors
Editiorial reviews
2
2 editorial reviews
First introduced in 1984, the Koss PortaPros have been a definitive staple of the portable headphones market for 25 years. They have survived through multiple model-line changes and their drivers have become the basis of the SportaPro and KSC55 street-style headphones and the KSC35/KSC50 clip-ons.Read more
The Koss Porta Pro KTC are decent-sounding and portable on-ear headphones for critical listening and mixed usage. They're lightweight, comfortable, and have a co...Read more
Read editorial 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
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6
6 editorial reviews
Sennheiser PX 100 Mini Headphones Review: s a unique model which can be referred to as a 'miniheadphone' thanks to its compact, collapsible designRead more
The Sennheiser PX-100-II are an open headphones designed for use when out and aboutRead more
The Sennheiser PX 100-II is a very good, stylish set of headphones that will nevertheless live in the shadow of the excellent original.Read more
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User rating
41
4.1 out of 5
41 user ratings
5 stars
34 %
4 stars
41 %
3 stars
21 %
2 stars
2 %
1 stars
0 %
37
4.1 out of 5
37 user ratings
5 stars
32 %
4 stars
43 %
3 stars
24 %
2 stars
0 %
1 stars
0 %
39
4.3 out of 5
39 user ratings
5 stars
51 %
4 stars
30 %
3 stars
17 %
2 stars
0 %
1 stars
0 %

Technical details

Sound outputStereoStereo
N/A
StyleOn-EarOver-EarOn-Ear
Connectivity technologyWiredWiredWired
Headset (integrated/enclosed microphone)nono
N/A
Magnet materialNeodymium
N/A
N/A

Design

Colour of product
  • Black
  • Grey
  • Black
  • Black,Grey
  • Black,Silver
  • Silver
Black,Silver
Acoustic designOpenClosed
N/A
Attachment typeNeckbandHeadband
N/A
Body materialPlastic
N/A
N/A
CategorySport
N/A
N/A
Foldableyesyes
N/A
Connector contacts platingGold
N/A
N/A

Dimensions

Weight2.19 oz6.1 oz2.12 oz

Sound

Impedance60.0 Ω60.0 Ω32.0 Ω
Frequency range15 - 2500015 - 22000
N/A
Driver technologyDynamicDynamic
N/A
Driver size0.14 in
N/A
N/A
Total harmonic distortion (THD)0.2 %0.2 %0.1 %

Connectivity

Inputs supported3.5mm
N/A
N/A
Cable length1.21.21.4
3.5 mm/6.3 mm adapter includedyes
N/A
N/A
Type of connector3.5mm3.5mm
N/A
USByesno
N/A
Detachable cablenono
N/A

Often compared with Koss SportaPro

Koss SportaPro Headphones
Koss KSC75
KossSportaPro
KossKSC75
Koss SportaPro Headphones
Koss Porta Pro
KossSportaPro
KossPorta Pro
Koss SportaPro Headphones
Koss KPH30i
KossSportaPro
KossKPH30i
Koss SportaPro Headphones
Teufel Real
KossSportaPro
TeufelReal
Koss SportaPro Headphones
Koss KSC35
KossSportaPro
KossKSC35
Koss SportaPro Headphones
Apple AirPods
KossSportaPro
AppleAirPods

Often compared with Koss UR40

Koss UR40 Headphones
Koss KSC75
KossUR40
KossKSC75
Koss UR40 Headphones
Koss KPH30i
KossUR40
KossKPH30i
Koss UR40 Headphones
Sennheiser PX 100-II
KossUR40
SennheiserPX 100-II
Koss UR40 Headphones
Sennheiser PX-100
KossUR40
SennheiserPX-100

Often compared with Sennheiser PX-100

Sennheiser PX-100 Headphones
Sennheiser PX 200-IIi
SennheiserPX-100
SennheiserPX 200-IIi
Sennheiser PX-100 Headphones
Koss UR40
SennheiserPX-100
KossUR40