You can buy the Koss Pro4S at the lowest price of HK$ 1,178.00 from Amazon.
Alternatively, the Koss Pro4S is also sold in Malaysia at Amazon with the price of HK$ 1,177.00 and Philippines at Amazon with the price of HK$ 1,177.00 and Singapore at Lazada with the price of HK$ 1,405.00.
Pricing details were last updated at 13 July 2018, 17:43.
|Release Date in Hong Kong|
|Ports & interfaces|
|3.5 mm connector|
|Cable length||1.4 m|
|Headphone frequency||10 - 25000 Hz|
|Headphone sensitivity||99 dB|
|Colour of product||Black, Silver|