This really confused me too at first - I just thought mine was broken :-) The secret is that the little thingy bounces back only when the sliders are too far apart (i.e. the headband is closed) You first have to adjust the sliders to a point when the headband is stretched enough to fit on a human's head - then you can switch it to 'Light' and it'll stay like this and not spring back on 'Firm VI . Customer Reviews and Testimonials A . Present feedback from diverse users regarding their experiences with Porta Pros. Summary: The Koss Porta Pro Classic headphones are an enduring symbol in the audio industry due to their unrivaled sound quality, distinctive design, and impressive comfort levels for extended listening sessions on-the-go. For $29, I was kind of expecting a smaller form factor KSC75, but it’s more like what I’d expect if Koss made the “free” headphones you can get on airplanes. Anemic bass, flat treble (yet still kinda sibilant), and just kinda lacking in any color. If these were an audio format, they’d be a cassette to the Porta Pro CD.
In fact, the utility series is not available yet in Europe, although Koss inform me that they will be available in the very near future and will be priced at 64.99€ for the KPH40, 89.99€ for the KEB90 and 69.99€ for the PortaPro Utility (which I don’t have at present).
Key Features. The PortaPro stereo headphones from Koss provide high-quality audio in a vintage design. Unchanged since 1984, the PortaPro offers a unique and recognizable look with performance to match. The headphones use rigid Mylar drivers to minimize distortion and provide accurate reproduction, while NdFeB magnet structures deliver strong
Most headphones at their price point are essentially the basic, bare-bones cans people buy to fit mobile listening, and it shows with the {{product.name}}s. Sporting a standard 3.93-foot cable terminated with a 1/8 th plug, the {{product.name}} will work with just about any mobile device.
I bought Koss Porta Pro Black and Koss Porta Pro Black Gold Limited Edition at the same time 2 months ago after delaying for the longest time. I have other more expensive headphones such as Sennheiser HD58X, HD6XX, HD660S, Beyerdynamic DT990, Audio-Technica ATH-A2000X and ATH-AD2000X and had thought that these cheaper Koss Porta Pro headphones
Using the Koss Lightening Utility cord, users can connect their headphones to Apple devices. So, if you're looking for headphones that make a statement and deliver fantastic sound, give the Koss Porta Pros a try. This article is part of Narcity Media's Technality series. Subscribe to Technality on YouTube for all things related to the future

A place for discussion, news, reviews and DIY projects related to portable audio, headphones, headphone amplifiers and DACs. Members Online How do people able to tell a high quality MP3 (frequency go up to 20khz) sound worse than a lossless audio since human can only hear close to 20khz frequency ?

The KTX Pro 1 comes with Koss' lifetime warranty, so when it breaks Koss will fix or replace it, forever. The KTX Pro 1 has a $29.95 MSRP, but Amazon's selling it for $10! That sale price will end

Review: Koss Pro4AA Titanium Equipment used: Philips 963SA DVD/CD Player Virtual Dynamics Nite ICs Signal Magic Power Cord Corda HA-1 mkII head amp Archos Jukebox Recorder 20 Panasonic LA95 Portable DVD/CD player Other headphones used in comparison: Koss Porta Pros Sony

Koss Porta Pro Utility On-Ear Headphones, Detachable Interchangeable Cord System, Collapsible Design, Stealth Grey 4.0 out of 5 stars 143 1 offer from $49.99 Koss Porta Pro History. The Koss Porta Pro was first released in 1984 in response to the fast-growing portable music player market, the most famous of which was the Sony Walkman. Koss released the Music Box, a portable AM/FM stereo with a tape cassette, in 1983, and the Porta Pro was designed as the best headphone to accompany the new device. Koss Porta Pro Classic Review. The Porta Pro Classic is very bare bones. In the box, there’s some warranty info and a carrying pouch, and the headphones themselves. Design on the Porta Pro is good, with a very lightweight plastic build reinforced by a nice aluminum headband with sliding tabs to accommodate even the most disproportionately kSj4c.
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