Plantronics Audio 400 DSP Stereofonisch Hoofdband Zwart Artikelnr: 4556401 MPN: 76921-15 EAN: 5052179493096

What the product is used for.

A headset is headphones combined with a microphone, or one headphone with a microphone. Headsets provide the equivalent functionality of a telephone handset but with hands-free operation. Types of headsets include single earpiece (monaural) and double earpiece.

The colour e.g. red, blue, green, black, white.

De technologie die het apparaat gebruikt om verbinding te maken:draadloosmet draad

How long the cable is.

Er is een verschil tussen koptelefoons die worden gedragen op het externe oor (supra-aural) en die het oor omringen (circumaural). Open hoofdtelefoons hebben schuimrubberen oorkussentjes die op het oor rusten of ring kussentjes die het oor omringen. Gesloten koptelefoons daarentegen hebben bijna altijd "circumaural" oorkussentjes.

The effective resistance of an electric circuit or component to alternating current, arising from the combined effects of ohmic resistance and reactance.

The range of frequencies (low to high sounds) that the headphones can produce.

Device has hot-plug capability, which means that user can replace system components without shutting down the system.

This is the Signal-to-Noise Ratio of the line out (output) of the device. The SNR is defined as the ratio of signal power to the noise power, often expressed in decibels. A ratio higher than 1:1 (greater than 0 dB) indicates more signal than noise.