It was $20. If you desire a more laid-back experience, I think the KSC75 is the perfect headphone. Nothing about its sound signature is particularly noteworthy, but it’s pure and natural even despite being incredibly flat. If you’re a bass head, you’ll probably want to consider other options. Koss Porta Pro – Recently also released in a Bluetooth variant as Koss Porta Pro Wireless; Koss Pro4/AA – An industry standard since 1970 and still in production; The Koss Pro4S features a new SLX40 element that Koss promises to be tuned for reference. The Koss Pro4S is born as a studio headphone that promises flat and accurate response, we Koss Porta Pro. 90 % Slúchadlá s Bluetooth. nie. Účel. k mobilným telefónom . Slúchadlá s rádiom. nie. Zobraziť ďalšie parametre. Ocenenie. Produkt MzsfXnD.