If you want to use them I know people who daily drives them and apparently they have no issues with them, mind they are open backs so they will leak and you will hear everything, personally I don't mind either, I tend to listen mine at low volume so it feels more like I'm on a game with music on the background, not a fan of loosing myself and disconnect from the world unless studying or Hey, I am in the process of searching for ear pads replacements for my porta pro which I just received as a present, and I read about G cush (which I didn't find to buy) and the famous yaxi pads, I will this weekend go on an audiophile shop and see if they have any test pads which I can try on, I would like to know the experience of my fellow koss owners! The only real difference in cables is the termination. The Porta Pro is an L-shape, the 30i’s is completely straight, and the KSC75 is like a cross between the 2. The Porta Pro is definitely the most retro-looking out of these, as the 30i resembles a fairly utilitarian design, both in look and functionality. The Porta Pro 25th Anniversary Limited Edition features dynamic elements that deliver exceptionally rich, deep bass and a remarkably wide frequency response from 15-25,000 Hz to capture every nuance in your favorite movie or musical performance. Constructed from mylar, the elements are extremely rigid, minimizing mechanical distortion and I love both the Koss Porta Pro and KSC75, and am looking for the next step up from them around the $200 mark. What headphone do you recommend with a similar sound? Primary use will be for music - indie, alternative, live shows, rock, punk, and pop. Comfortable would also be a plus. A place for discussion, news, reviews and DIY projects related to portable audio, headphones, headphone amplifiers and DACs. Got this for christmas, do they even make music that goes to 32 bit 384khz? What does it do then. reReddit: Top posts of December 30, 2017. reReddit: Top posts of December 2017. The Senn pads take the drivers a bit further out from the ear and seem to reduce bass a little. But it also seems to reduce a bit of the airiness I like in the Porta Pro. One thing I noticed immediately was a slight increase in depth of soundstage. The biggest problem with this mod is the cost of the pads themselves. The Porta Pro hold up surprisingly well. AKG K245. I too was searching for a KPH30i replacement since the right driver died on my pair. I took the leap of faith and bought these cans with only a Head-Fi forim to go by. RLTsp.