- Oct 17, 2008
I use PortaPros with my iPod when working out because I think the bassy sound compensates well for the thin mp3 player sound. The gym I go to is noisy with TVs on all on the time and I have to turn up the volume louder than I normally would to hear my music with the open headphones. Which one of Koss's closed models sounds the most like the PortaPro? Do any of them use the same drivers as the PortaPro?