In 1984, the acclaimed Koss Porta Pro set performance and comfort standards for portable personal listening - worldwide. Porta Pro KTC; 2012 ProDJ200; 2013 KSC32 Overview Prices Reviews Specs + Add to comparison. Home > Headphones comparison > Bose QuietComfort 45 vs Koss Porta Pro KTC. 72 points. Bose QuietComfort 45. 39 points. Overview Prices Reviews Specs + Add to comparison. Home > Headphones comparison > Koss Porta Pro KTC vs Zebronics Zeb-Thunder. 39 points. Koss Porta Pro KTC. 56 points. Product: Koss PortaPro KTC Headphones. Price: $80. Pro: Timeless design, amazingly durable, fantastic sound for the price, and come with a lifetime guarantee. Also probably the most comfortable Overview Prices Reviews Specs + Add to comparison. Home > Headphones comparison > Koss Porta Pro Wireless vs Koss PortaPro KTC. 45 points. Koss Porta Pro Wireless. 27 Overview Prices Reviews Specs + Add to comparison. 45 points. Bowers & Wilkins P7 Wireless. 28 points. Koss PortaPro KTC $ 400 $ 60. Comparison winner (Koss Porta Pro KTC) The first number of the IP rating refers to protection against dust, while the second number refers to protection against liquid. E.g. a first number of 6 denotes that it is completely dustproof, and a second number of 7 denotes that the device can withstand full immersion in water. Koss Porta Pro KTC review: Koss Porta Pro KTC. The Koss Porta Pro KTC headphones are lightweight physically but not in performance, and they have a convenient Apple inline remote. Stephen NlGWjOj.