Koss Pro4AA Studio Quality Over-Ear Headphones, Retro Style, Full-Size, Beige

Price: $79.99 - $69.99
(as of Jun 25, 2026 18:01:40 UTC – Details)

Product description

Legendary Sound

In 1970 Koss set the standard for full-size professional headphones with the Pro/4AA.

High-Fidelity Audio

Pro/4AA features oversized elements for an exceptionally dynamic 10-25,000Hz frequency response.

Superior Noise Isolation

Adjustable slide bars provide a snug fit, critical for monitoring and sealing out unwanted noise.

Built to Last

Ultra durable design ensues Pro/4AA can withstand frequent use and demanding environments.

Legendary Colorway

Pro/4AA was the first Koss Headphone to use the iconic Koss Rhythm Beige colorway.

1 Pro/4AA

2 Legendary Sound

3 Noise Isolating

4 Ultra Durable

5 Rhythm Beige

Superior Noise Isolation

In 1970 Pro/4AA set the standard for full-size professional headphones with impressive noise isolating capabilities.

The Sound of Koss

Pro/4AA were regarded as the first dynamic headphones to deliver true full frequency and high-fidelity performance at 10-25,000Hz.

Coiled Cord

A convenient and compact 8 foot coiled cord with 3.5mm plug and included 6.3 mm (1/4 inches) adapter provides a tangle free listening experience.

Adjustable Headband

Enjoy a comfortable listening experience with a durable steel and integrated adjustable and padded headband.

Legendary Headphone. Legendary Colorway. John C. Koss

In 1958 founder John C. Koss changed the way we all listen to music when he invented the world’s first SP/3 Stereophone. In 1970 Koss would set the standard for full-size professional headphones with the introduction of the Pro/4AA.

Rhythm Beige

The iconic Koss Rhythm Beige colorway can be found on many legendary Koss Headphones like Porta Pro Limited Edition, KPH30i and KPH40 Utility – but it was first introduced in 1970 with the release of the Pro/4AA.

Frequency Response 10-25,000- Hz Impedance 250 Ohms SPL 95dB SPL/1mW Plug 3.5mm with 6.3mm adapter Cord Coiled, Single Entry, 8ft Headband Adjustable Released 1970 Included Pro/4AA, 6.3mm adapter

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Price

$69.99$69.99

$29.99$29.99

$34.99$34.99

$49.99$49.99

$29.99$29.99

$23.99$23.99

$16.99$16.99

Headphone Type

Over Ear

On Ear

On Ear

On Ear

On Ear

On Ear

Ear Clip

Connection

3.5mm (includes 6.3mm adapter)

3.5mm

3.5mm

Utility Series

Utility Series

3.5mm

3.5mm

Utility Series

—

—

—

3.5mm, USB-C & Lightning

3.5mm, USB-C & Lightning

—

—

Audio Controls

—

—

In-Line Remote

Utility Cord Remote

Utility Cord Remote

In-Line Remote

—

Microphone

—

—

In-Line Remote

Utility Cord Remote

Utility Cord Remote

In-Line Remote

—

Noise Isolating

Yes

—

—

—

—

—

—

Adjustable Headband

Yes

Yes

Yes

Yes

Yes

Yes

—

Collapsible

—

Yes

Yes

Yes

—

—

—

Carrying Case/Pouch

—

Carrying Pouch

Hardshell Case

Carrying Pouch

—

—

—

1970 – Koss set the standard for full-size professional headphones with the iconic Pro/4AA
LEGENDARY SOUND – The first dynamic headphones to deliver true full frequency and high fidelity performance
ICONIC DESIGN – One of the most recognizable headphones around the world
NOISE ISOLATING – Over ear design with superior noise isolation
COIL CORD – Compact 8 ft coiled cord with 6.3mm (1/4 in) plug
HIGH FIDELITY AUDIO – 250 ohms / 10-25,000