KOSS Porta Pro Classic
The Koss PortaPro have a sensitivity of 101 dB, which is 3 dB lower than the average for all Headphones. Additionally, the headphones have a 60 ohm impedance, which is far better than the average for all Headphones.
The Koss PortaPro headphones have a frequency range of 15 Hz to 25 kHz, which is 1 kHz larger than the average for all Headphones.
The Koss PortaPro headphones have a cable length of 1.2192 m, which is 1.6% more than the average for all On Ear Headphones.
The ultimate portable on-ear stereophones
Comfort Zone setting on temporal pad for comfortable, secure fit
Dynamic element for extended frequency response
Oxygen-free copper voice coils deliver deep bass and signal clarity
Includes a convenient carrying case for protective storage
Collapsible for easy storage and travel
Frequency Response - 15 â€“ 25,000 HzCord
Length, Entry - 4ft. dual entry
Plug Type - 3.5 mm
Sensitivity - 101 dB SPL
Impedance - 60 Ohms
Koss headphones have been ranked number 15th on the list of best headphones brands in the world. see the full list here
These Koss headphones have been rated highest on the overall sound quality amongst the Koss range with rating of 97/100