They're sold on Amazon UK site, "dispatched from and sold by Amazon", so it would be surprising to me if they were fake. Maybe Koss makes them only for that market?
https://www.amazon.co.uk/Koss-Porta-Ear-Stereo-Headphones/dp/B005I4987E/ref=sr_1_1?ie=UTF8&qid=1485565195&sr=8-1&keywords=koss+portapro+red
Quote:
https://www.amazon.co.uk/Koss-Porta-Ear-Stereo-Headphones/dp/B005I4987E/ref=sr_1_1?ie=UTF8&qid=1485565195&sr=8-1&keywords=koss+portapro+red
Quote:
The red PortaPro is probably fake. I've never seen red on the Koss website. So if you can, get your money back. Here's a thread on fake PortaPros.
http://www.head-fi.org/t/439656/possibly-fake-portapro-help-me