Koss QZ/900 Review

Koss QZ/900Excellent clarity coupled with extra comfort

Deep rich lows and sparkling highs in a stereophone you'll want to take along everywhere. In fact the noise cancelling ability is so good in the new QZ/900 that you'll find less need to turn up the volume and overdrive the tiny amplifier in your portable electronics. This means greater efficiency, less distortion and all the excitement of a live performance.


It may be a bit expensive for the people to buy the stuff but you can easily go for it because of its high quality performance level.

A Koss QZ/900 product is priced at $150.57.

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Check the Amazon website here for more information on this product.


Koss QZ/900 Review

Stay on the move with high-quality audio playback

The QZ/900 operates with or without its active noise cancelling circuit engaged. A handy removable cord features an in line volume control and one standard AAA battery provides approximately 50 hours of active noise cancellation.

The QZ900, latest addition to the Koss Quiet Zone line – adds a new level of performance and comfort. Designed to monitor outside noise received through specially mounted microphones in each ear cup. Koss QZ900 circuit introduces a sound wave which is 180° out of phase with the incoming signal. The result is "zero earth" at the point of the eardrum and dramatic reduction of most low frequency distractions, resulting in deep rich lows and sparkling highs, noise canceling ability so good you'll need less volume for greater efficiency and less distortion from overdriving the tiny amplifier in your portable electronics.

QZ900 operates with or without active noise canceling circuit engaged. Features a removable cord and an on line volume control and 1 standard AAA battery which provides approximately 50 hours of active noise cancellation. The electronics package inside each Koss QZ/900 is designed to monitor outside noise received through specifically mounted microphones in each ear cup.

Once this incoming noise can be analyzed, the Koss QZ/900 circuit introduces a sound wave that is 180 degrees out of phase with the incoming signal. In fact the noise canceling ability is so good in the QZ/900 that you'll find less need to turn up the volume and overdrive the tiny amplifier in your portable electronics. This means greater efficiency, less distortion and all the excitement of a live performance. The QZ/900 operates with or without its active noise canceling circuit engaged.

Where to Purchase:

Check Out the the Amazon Website Here.

Technical Info:

Frequency Response    20 – 20,000Hz
Impedance    32 ohms
Sensitivity    100 dB SPL
Distortion    
Cord    Straight, Single Entry, 4ft

See the Amazon website for Koss QZ/900

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Koss Sportclip KSC75 Review

Philips SHS3200/37 EarbudsCheaply priced, cheaply constructed, and cheap sound reproduction.


The only good thing about these headphones is that they have a retro design and are cheap.


To put it lightly, these headphones are junk. They are poorly constructed, not to mention ill fitting around the ear, and their sound is heavily distorted.


These headphones may only be $20, but they are definitely not worth the investment. The design is awfully constructed as they fall off of the ears when you move. In addition, sound quality is at a bare minimum.


The Not So Sporty Sportclip KSC75s

These headphones are cheap- they are cheaply priced, cheaply constructed, and have cheap sound reproduction.

For those of us on the move, finding headphones that are travel savvy is a primary consideration when making purchases. That’s why when I saw the Sportclip KSC75’s I was ecstatic to finally find that perfect pair of headphones that would make running at the gym an enjoyable experience. Their name, “Sportclip,” implies that they will work well while participating in sport-like activities— unfortunately, that is a lie.

The Sportclip KSC75’s are cheap. At only $20, I did not expect a melodiously earth shattering experience, only that these phones would merely help me move and groove on the treadmill; however, the Sportclip KSC75’s did more to harm my workout than aid me in physical exercise. The over-the-ear design made to clip “comfortably” over my ear, according to Koss, was complete bull. The piece made to slip over the ear is not only so large it must have been developed with Dumbo in mind, it actually breaks apart when you move. That’s right, this so called comfortable clip, pops off whenever there is the slightest of movements, causing the phone to actually fall to your side and the clip to fall to the ground. In addition to the uncomfortable over the ear design, the inline volume changer, located near the stomach, has no clip. When you run or partake in any activity, the clip bounces and hits you in the stomach and chest—not exactly sporty in my opinion.  So Koss, I have a bone to pick with your new “sport clips.” Just how exactly am I supposed to play a sport, let alone move, when I have an inline volume changer jabbing me in the stomach and headphones that keep breaking apart? Talk about false advertising.

Unfortunately, what these phones lack in comfort and design is not made up for in sound quality. The distortion that these phones create makes everything sound like techno because everything sounds fuzzy. The overall tinny sound is hard to deal with and the strained highs and growly lows made me grimace as I listened to the Beatles be butchered by these cans.

Twenty dollars is a reasonable price for headphones and there are plenty of contenders in that range that are well worth the investment— these phones are just not one of them. Don’t waste your money on Koss’ Sportsh*t, err, Sportclip KSC75s.

Technical Info

Frequency Response: 15-25,000 Hertz
Impedance: 60 ohms
Sensitivity: 101 dB SPL/1mW
Distortion: <0.2%
Cord: Straight, Dual Entry, 4ft.
Cost: $19.99