Koss QZ900 information from Consumer Reports

Koss QZ900

Approximate retail price:

$249.99

Summary: Home/Studio-style closed, over-ear noise-canceling headphones that come with carrying case and detachable connecting cord.

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Type: Home/Studio style headphones

About - Koss QZ900
The Koss QZ900 is part of the headphone test program at Consumer Reports. In our lab tests, noise-canceling headphone models like the QZ900 are rated on multiple criteria, such as those listed below. Sound quality: Represents the tonal accuracy, clarity, detail, ambience, and dynamics of the audio reproduced by the headphone. Noise reduction: Represents how well the headphone reduces ambient noise when the active noise cancelation feature is activated. Sensitivity: An assessment of how loud headphones will play for a given audio input signal level. This is an important consideration if the headphones will be used with audio devices that have relatively low maximum audio output signal levels like some battery powered portables. Some models have 2 sensitivity levels given: one with the highest selectable setting or noise-reduction switch ON and the other with the lowest selectable setting or noise-reduction switch OFF.

About - Koss QZ900

The Koss QZ900 is part of the headphone test program at Consumer Reports. In our lab tests, noise-canceling headphone models like the QZ900 are rated on multiple criteria, such as those listed below.

Sound quality:: Represents the tonal accuracy, clarity, detail, ambience, and dynamics of the audio reproduced by the headphone.
Noise reduction:: Represents how well the headphone reduces ambient noise when the active noise cancelation feature is activated.
Sensitivity:: An assessment of how loud headphones will play for a given audio input signal level. This is an important consideration if the headphones will be used with audio devices that have relatively low maximum audio output signal levels like some battery powered portables. Some models have 2 sensitivity levels given: one with the highest selectable setting or noise-reduction switch ON and the other with the lowest selectable setting or noise-reduction switch OFF.

About This Brand
Koss is an established headphone brand that offers a complete line of products with prices from low to midprice.

About This Brand

Koss is an established headphone brand that offers a complete line of products with prices from low to midprice.

Features & Specs - Koss QZ900
Works with noise reduction off Will operate without the noise-canceling circuitry activated; allows the model to be used as standard headphones if the batteries die. Works with noise reduction off	Yes
Monitor function (mute) Has a control that turns off the audio, and in the case of noise canceling models turns off the noise canceling function, so that ambient sounds can be heard. Useful for hearing ambience like travel announcements without turning off the audio player or removing the headphones. Monitor function (mute)	No
Integrated microphone Has an integrated microphone for use with some cell phones or audio players with a recorder function. Integrated microphone	No
Call connect/disconnect control This allows you to answer or disconnect from a phone call with some cell phones. Call connect/disconnect control	No
Integrated volume control This allows you to adjust the volume without having to dig into your pocket or purse for a player. Integrated volume control	No
Integrated player control This allows you to control some player functions (for example: play, pause, track skip) via a control without having to dig into a pocket or purse for a player. Integrated player control	Yes
Noise canceling unit in earpiece The electronic circuitry for the noise cancelation function is integrated into headphones earpiece rather than incorporated as a separate module that is integrated into the audio cord. Noise canceling unit in earpiece	Yes
Detachable cable A detachable cable allows the headphones to be used for noise canceling without the cord being connected to a music or video player, or dangling from the headset. Detachable cable	Yes
Cable length (in.) Cable length indicates the approximate length of the cable from the headset or earpiece to the plug, measured in inches. Cable length (in.)	48
Battery type The number and type of batteries used. Battery type	(1) AAA
Low battery indicator An indicator to show that the headphone battery power is low and will need to be replaced or recharged. Low battery indicator	No
Weight (oz.) Reflects the weight, in ounces, of the headphones including the audio cable and batteries, if any. Weight (oz.)	8
More features and specs

Additional Information (The information below has been supplied by an external source.)

General Information
Manufacturer	Koss Corporation
Manufacturer Website Address	www.koss.com
Product Model	QZ900
Product Name	QZ900 Noise Canceling Headphone
Product Type	Headphone

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