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Bluetooth Headhpones Koss

Catalogue
Price
-
Design
Earplugs
(2)
Ear
(3)
Around the ears
(1)
Construction
Closed
(5)
Open
(1)
connection type
3.5 mm Jack
(2)
Bluetooth
(6)
0
6 Results
Design
earplugs (2)
ear (3)
around the ears (1)

Clearly defines the headphone design. Earbuds and canalbuds are suitable for sport or travel, while full-size headphones are suitable for comfortable home listening or as a PC accessory. 

Construction
Closed (5)
Open (1)

Construction is one of the main criteria in the selection. Closed headphones isolate you from the noise around you and also keep others from hearing your music, while the open design allows more natural sound reproduction, but at the expense of sound passing through the cups.   

Microphone
With microphone (5)
Without microphone (1)
Microphone construction
cable (3)
Integrated into construction (2)
Directional characteristics
Omni-directional scanning (2)

Microphone directionality describes the microphone's sensitivity to sound from various directions.

connection type
3.5 mm Jack (2)
Bluetooth (6)

3.5mm jack connector (in case of PC headphones, a pair of 3.5mm jack connectors or USB connector) is definitely the most widespread connector type. Wireless headsets, using Bluetooth or radio channels for connection, are also increasing in popularity.  

Cable length
1.2 m
1.2 m

Shorter cables are ideal for portable earphones as they are harder to tangle. Headphones for home use (eg. TV headphones), on the other hand, can provide more comfort with longer cables.

Cable routing
Unilateral (in one shell) (3)
Bilateral (in both shells) (1)

There are single-side and double-side headphone cables – single-side headphones have the advantage of a single cable connected to a headset, effectively preventing the wire from getting tangled.

Frequency from
10 Hz
50 Hz

Frequency is one of the most important parameters when choosing headphones. Generally, the higher frequency range of headphones, the better sound quality. The lower limit of the frequency range deals with bass reproduction. Frequency is measured in Hertz (Hz).

Frequency to
18,000 Hz
25 kHz

Frequency is one of the most important parameters when choosing headphones. Generally, the higher frequency range of headphones, the better sound quality. The upper limit of the frequency range deals with treble reproduction. Frequency is measured in Hertz (Hz).

Functions and features
folding design (1)
A detachable cable (2)
Replaceable earcups (1)
Protection level
IPx0 (1)
Unprotected.
N/A (2)
Sensitivity
97 dB/mW
101 dB/mW

Sensitivity is measured in decibels per milliwatt, or dB/mW, and describes the sound pressure level. Generally, the higher the sensitivity, the better the headphones are for sound reproduction. A higher value also indicates higher volume.

Equipment
Replaceable earcups (3)
Volume control (4)
Impedance
38 Ohm
38 Ohm

An electrical parameter expressing resistance circuits in headphones in ohms. Headphones with lower impedance have a higher volume (important for portable media players), but greater distortion. Larger impedance equals lower volumes and lower distortion.  

White (1)
Grey (4)
Display Items
Koss PORTA PRO Wireless - Headphones with Mic
-13%
Koss PORTA PRO Wireless
Headphones with Mic - wireless, headset, open, folding, Bluetooth 4.1 with aptX support, frequency range: 15Hz-25kHz, 44mm drivers, up to 12 hours battery lifew, remote control, travel pouch

Purchased by 12 customers this week
-13% £103.69
£89.90 excl.VAT £74.92
Buy
In stock 5 pcs
Order Code: JK165w
Koss BT / 539i black (24 month warranty) - Headphones
-32%
Koss BT / 539i black (24 month warranty)
Headphones - cordless, headset with microphone, Bluetooth 4.0, frequency range 10Hz-20kHz, impedance 38 Ohm, sensitivity 97db, detachable cable

-32% £92.90
£62.90 excl.VAT £52.42
Buy
In stock > 5 pcs
Order Code: JK983y2
KOSS BT/115i grey - Headphones with Mic
-11%
KOSS BT/115i grey
Headphones with Mic - wireless, in-ear, Bluetooth 4.2, frequency range: 18Hz-20kHz, USB charging cable, 6-hour battery life

-11% £34.90
£30.90 excl.VAT £25.75
Buy
In stock > 5 pcs
Order Code: JK997i1
Koss BT/221i grey
Headphones with Mic - wireless, sports, in-ear, frequency: 50Hz-18kHz, Bluetooth 4.2, sensitivity: 101dB, USB cable, up to 6 hours battery life

£34.90 excl.VAT £29.08
Buy
In stock > 5 pcs
Order Code: JK997l5
Koss BT / 539i white (24 months warranty) - Headphones
-32%
Koss BT / 539i white (24 months warranty)
Headphones - wireless, headset, microphone, Bluetooth 4.0, frequency range 10Hz-20kHz, 38ohm impedance, 97dB sensitivity, removable cable

-32% £92.90
£62.90 excl.VAT £52.42
Buy
In stock > 5 pcs
Order Code: JK983y1
KOSS BT/232i grey
Headphones with Mic - wireless, sports, in-ear, Bluetooth 4.2, frequency range: 18Hz-20kHz, USB charging cable, 6-hour battery life

Purchased by 12 customers this week
£41.90 excl.VAT £34.92
Buy
In stock > 5 pcs
Order Code: JK997n1

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