Product Description
Legendary Sound
In 1970 Koss set the usual for full-size skilled headphones with the Professional/4AA.
Excessive-Constancy Audio
Professional/4AA options outsized parts for an exceptionally dynamic 10-25,000Hz frequency response.
Superior Noise Isolation
Adjustable slide bars present a cosy match, vital for monitoring and sealing out undesirable noise.
Constructed to Final
Extremely sturdy design ensues Professional/4AA can stand up to frequent use and demanding environments.
Legendary Colorway
Professional/4AA was the primary Koss Headphone to make use of the long-lasting Koss Rhythm Beige colorway.
1 Professional/4AA
2 Legendary Sound
3 Noise Isolating
4 Extremely Sturdy
5 Rhythm Beige
Superior Noise Isolation
In 1970 Professional/4AA set the usual for full-size skilled headphones with spectacular noise isolating capabilities.
The Sound of Koss
Professional/4AA had been considered the primary dynamic headphones to ship true full frequency and high-fidelity efficiency at 10-25,000Hz.
Coiled Twine
A handy and compact 8 foot coiled twine with 3.5mm plug and included 6.3 mm (1/4 inches) adapter supplies a tangle free listening expertise.
Adjustable Headband
Get pleasure from a cushty listening expertise with a sturdy metal and built-in adjustable and padded headband.
Legendary Headphone. Legendary Colorway. John C. Koss
In 1958 founder John C. Koss modified the best way all of us hearken to music when he invented the world’s first SP/3 Stereophone. In 1970 Koss would set the usual for full-size skilled headphones with the introduction of the Professional/4AA.
Rhythm Beige
The enduring Koss Rhythm Beige colorway could be discovered on many legendary Koss Headphones like Porta Professional Restricted Version, KPH30i and KPH40 Utility – but it surely was first launched in 1970 with the discharge of the Professional/4AA.
Frequency Response 10-25,000- Hz Impedance 250 Ohms SPL 95dB SPL/1mW Plug 3.5mm with 6.3mm adapter Twine Coiled, Single Entry, 8ft Headband Adjustable Launched 1970 Included Professional/4AA, 6.3mm adapter
Extra Merchandise From Koss
Buyer Opinions
4.4 out of 5 stars 906
4.6 out of 5 stars 16,737
4.4 out of 5 stars 2,035
3.8 out of 5 stars 209
4.4 out of 5 stars 1,135
4.4 out of 5 stars 3,522
4.3 out of 5 stars 8,532
Worth
$69.99$69.99
$28.49$28.49
$35.00$35.00
$39.99$39.99
$29.99$29.99
$21.99$21.99
$16.99$16.99
Headphone Kind
Over Ear
On Ear
On Ear
On Ear
On Ear
On Ear
Ear Clip
Connection
3.5mm (contains 6.3mm adapter)
3.5mm
3.5mm
Utility Sequence
Utility Sequence
3.5mm
3.5mm
Utility Sequence
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—
—
3.5mm, USB-C & Lightning
3.5mm, USB-C & Lightning
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—
Audio Controls
—
—
In-Line Distant
Utility Twine Distant
Utility Twine Distant
In-Line Distant
—
Microphone
—
—
In-Line Distant
Utility Twine Distant
Utility Twine Distant
In-Line Distant
—
Noise Isolating
Sure
—
—
—
—
—
—
Adjustable Headband
Sure
Sure
Sure
Sure
Sure
Sure
—
Collapsible
—
Sure
Sure
Sure
—
—
—
Carrying Case/Pouch
—
Carrying Pouch
Hardshell Case
Carrying Pouch
—
—
—
1970 – Koss set the usual for full-size skilled headphones with the long-lasting Professional/4AA
LEGENDARY SOUND – The primary dynamic headphones to ship true full frequency and excessive constancy efficiency
ICONIC DESIGN – Probably the most recognizable headphones all over the world
NOISE ISOLATING – Over ear design with superior noise isolation
COIL CORD – Compact 8 ft coiled twine with 6.3mm (1/4 in) plug
HIGH FIDELITY AUDIO – 250 ohms / 10-25,000
Clients say
Clients reward these headphones for his or her excellent sound high quality, significantly noting their barely subdued deep bass extension and skill to isolate background noise, whereas being constructed like a Sherman tank. Clients discover them glorious for all functions and take into account them extraordinarily good worth for cash. The consolation and elegance obtain blended suggestions – whereas some discover them comfy and engaging, others report ache on the high of their head and discover them dated-looking. The match can be blended, with some appreciating the comfortable over-ear design whereas others be aware they do not accommodate smaller heads.
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