Koss "Porta Pro" On Ear Headphones

Product Information

I’ve seen HD600’s from the ’90s that are still around until today, so that’s truly a testament to the build quality. But the KPH30i is much lighter on the head, and would really be nice of longer listening sessions. Headphones with a dynamic element positioned just outside the ear, connected to a tubular port structure that inserts into an expandable cushion Midrange frequencies are the star of the KSC75 show and are reasonably balanced. Vocals stand out in the mix, and voices sound consistent and natural if a touch thinner and less warm than is my ideal. The detail is really quite good, and things sound clear and clean. Treble

In terms of sound, they are quite similar. They both have similar sound stage widths and heights. The sound signature is also quite similar, in that they are both very neutral, but I’d say that the HD58X would have an advantage in terms of bass and treble extension. Think of the HD58X as the big boy version of the KPH30i, something that the KPH30i would probably aspire to become when it grows up. Our VerdictMany have extolled the virtues of these headphones that cost about the same as a lunch for two at your favorite fast food joint. It’s time to find out if the KSC75 are the giant killers they are said to be. Do they really sound good enough to put headphones many times their price to shame? How do they compare to their numerous brothers and sisters sharing the same driver? It’s great to see that Koss still stands behind their lifetime warranty on their budget products. Cable a b Barrier, Michael (1990). "Life after near-death - Koss Corp. near bankruptcy". Nation's Business. Archived from the original on 2008-02-20.

The acclaimed Koss Porta Pro® hascaptivated audiophiles and music enthusiasts for decades and continues to be one of the most popular headphones worldwide. The KPH30i is not much of a looker, in fact, it could easily be lost in a computer parts bin. Once you touch it though, you would realize that these are quite different. The plastic that was used is quite a bit more durable than the generic ones, and I wouldn’t be surprised if these last me for a few years.

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Originally introduced in 1984, the Koss Porta Pro® has stood the test of time due to its impressive performance and portability. Equipped with dynamic elements that deliver a wide frequency response and deep bass, Porta Pro® offers remarkable sound reproduction producing a rich, detailed audio experience that enhances the enjoyment of music across various genres. Without repeating myself too much, the 35 mm, 60 Ohm driver is what makes this range of headphones so special. According to Koss, the “computer-optimized neodymium, iron, and boron rare-earth magnet structures deliver amazing clarity at any volume” and the “oxygen-free copper voice coils improve signal transmission and conduction for cleaner, clearer sound.” The diaphragm receives an extremely thin layer of titanium bonded to its surface. Titanium is a popular choice for driver manufacturers as it has the highest strength-to-weight ratio of any metal. Titanium sure does make the driver super shiny!

Incorporated a neodymium, rare earth magnet and 16-micron mylar diaphragm for deep bass and treble clarity

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Again, no surprises here. The sound quality of the KPH30i punches way above its weight class. They more than hold their own in the budget Koss lineup and absolutely deserve distinction from their peers.

These headphones are not that hard to drive, at 60Ω, and 101dB SPL, I can even drive them off a smartphone. You won’t get the best of them through your phone though, as driving them with better gear does have its benefits. Perhaps the most striking thing is how much better the KSC75 sound than how they look. The KSC75 sound surprisingly refined and balanced for their modest price. Where to Buy John C. Koss founded the J.C. Koss Hospital Television Rental Company in 1953. [3] After a short time Koss was looking for new ideas, and partnered with Martin Lange to eventually develop a stereo headphone. Based in Milwaukee, Wisconsin, United States, in 1991 Koss Audio & Video Electronics started producing and selling consumer electronics products as a separate company in Hazelwood, Missouri, United States. The Koss family owns more than 75% of the firm. In 2020, Koss sued Apple, Bose, JLAB Audio, Plantronics Inc., and Skullcandy for patent infringement. [10] In July 2022 Koss and Apple reached a settlement for an undisclosed amount regarding the alleged patent infringement on Koss' intellectual property [11]

KOSS KPH30I Specifications

The only issue that I can see with comfort is that they seem to be a bit loose on the ears, leaving me with a less than optimal seal around my ears, and the sound would probably leak quite a lot from these. Isolation I (and many others) have gone on at length about the superb 60ohm, 35mm driver found in the Porta Pro, Sporta Pro, KPH30i, and the KSC35. Koss uses a titanium-coated version in the UR40, KTXPro1, and KSC75. This extraordinary driver defines this legendary series of headphones and has been in constant production and daily use for almost four decades! Koss headphones with the 60ohm driver are important staples in the portable headphone industry. The Koss Design and Engineering teams collaborated to create the perfect wireless configuration using Bluetooth 4.1 with aptX™ to ensure the Porta Pro® Wireless Bluetooth headphones maintained the classic Sound of Koss® profile listeners have been enjoying since 1984. As with all the headphones sharing this venerable driver, the KPH30i offer far more than they cost.