Koss Porta Pro Official Hard Carry Case, Hard Shell Construction, Designed Specifically for Porta Pro, Black $14.99 $ 14 . 99 Get it as soon as Wednesday, Jan 3 Their models can cost from $9.99 (Koss ED1TC) to $499.99 (Koss x Drop ESP95x) – depending on their features. With their wide variety of products, you’ll surely find a unit that suits your needs. Sources: KOSS PORTA PRO WIRELESS REVIEW: A CLASSIC MISTAKE. Koss BT540i Headphone Review. Review: Koss Porta Pro Wireless 1: On-ear (as opposed to in-ear) due to ease of use (and also hygiene), specially when letting friends use them. 2: They would need to be super-light and airy - the Quest already feels heavy and sweaty, and I didn’t want anything big to cover my head even more. 3: Pretty low impedance. The audio output on the quest is strong and I’ve found On Ear Headphones. Without changing the sound or the design, we've added an all-new cable system to the iconic Porta Pro® that features an in-line microphone and 1-touch remote. $59.99. Porta Pro® Utility On Ear Headphones. The Porta Pro® Utility Series On-Ear Headphone is an all-new way to experience the Sound of Koss®. Save on the additional Utility Series USB-C or Lightning cord by adding them to your cart at checkout. $49.99. Quantity. The "Pro" on Koss Porta Pro has absolutely nothing to do with "Pro" as "professional". Koss Porta Pro were designed for walkman, discman and other portable applications. For small headphones have quite an amazing amount of bass. They fit snugly and stay tight without being uncomfortable. Hey everybody. My current daily driver is the venerable, tried and true legend Koss Porta Pro. I was just wondering, whether the moondrop starfield would be an upgrade or not. Please can someone compare them in terms of: -Detail retrieval -Frequency response -Tonality and timbre -Soundstage -Imaging -Speed and dynamics -Comfort That might be my review on Amazon.. I had the 221is, they are not the same drivers. They're terrible all around, and I had problems with my pair connecting to BT. For BT at home as a longtime Koss fan, I'd go PortaPro Wireless or bust. Beats are going to be superior in a lot of ways for BT, but won't get them for $80. The PortaPros leak about as much sound in and out as all stock headphones for portable walkmen. Like these, or whatever came with your walkman. It's no big deal for average portable use, but if you want crystal sound when on a noisy bus or subway, pay a hundred times more for some closed headphones. The PortaPros sound great. If you're just Turkey. I researched both headphones. Normally PortaPro should be more expensive. But things change for me after tax and shipping fee. PortaPro $43. PortaPro 3.0, Black version $50 ( Good looks but cable quality has reduced? ) Ksc75 $50. The Kph30i is pretty good too. kCrfUw.