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Koss PortaPro Stereo Headphones

BH #KOPORTAPRO • MFR #PORTA PRO
142 reviews
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Koss PortaPro Stereo Headphones
Key Features
  • Vintage Design
  • Mylar Diaphragms
  • NdFeB Magnet Structures
  • OFC Voice Coils
The PortaPro stereo headphones from Koss provide high-quality audio in a vintage design. Unchanged since 1984, the PortaPro offers a unique and recognizable look with performance to match. The headphones use rigid Mylar drivers to minimize distortion and provide accurate reproduction, while NdFeB magnet structures deliver strong volume levels. Oxygen-free copper voice coils improve signal transmission for clean, clear sound.
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Koss PortaPro Overview

The PortaPro stereo headphones from Koss provide high-quality audio in a vintage design. Unchanged since 1984, the PortaPro offers a unique and recognizable look with performance to match. The headphones use rigid Mylar drivers to minimize distortion and provide accurate reproduction, while NdFeB magnet structures deliver strong volume levels. Oxygen-free copper voice coils improve signal transmission for clean, clear sound.

The adjustable headband conforms to virtually any head size, while the foam earpads provide comfort and also let you maintain awareness of your surroundings. The cable provides plenty of slack and has a standard 3.5mm mini plug for connecting to MP3 players, CD players, and much more.

Unique vintage design
Rigid Mylar diaphragms for accurate sound reproduction with minimal distortion
NdFeB magnet structures provide strong volume
Oxygen-free copper voice coils for improved signal transmission for clean, clear sound
Adjustable headband
Foam earpads provide comfort and the ability to maintain awareness of your surroundings
UPC: 021299147764

Koss PortaPro Specs

Key Specs
Wearing Style
Dual Ear with Headband
Foldable: Yes
Earpiece Swivel: No
Open/Closed-Back
Semi-Open-Back
Impedance
60 Ohms
Active Noise Cancellation
No
Frequency Response
15 Hz to 25 kHz
Built-In Mic
No
Audio Connector
1x 1/8" / 3.5 mm TRS
Headphone
Wearing Style
Dual Ear with Headband
Foldable: Yes
Earpiece Swivel: No
Earpiece Design
On-Ear (Supra-Aural)
Open/Closed-Back
Semi-Open-Back
Sound Field
Stereo
Driver Type
Dynamic
Impedance
60 Ohms
Active Noise Cancellation
No
Frequency Response
15 Hz to 25 kHz
Sensitivity
101 dB SPL at 1 kHz / 1 mW
Built-In Controls
No
Microphone
Built-In Mic
No
Connectivity
Wired Audio Connector
1x 1/8" / 3.5 mm TRS
Cable Design
Non-Detachable / Straight
Cable Length
3.9' / 1.2 m
Physical
Color
Black / Silver
Environmental Resistance
No
Packaging Info
Package Weight
0.395 lb
Box Dimensions (LxWxH)
8.15 x 5.75 x 2.4"

Koss PortaPro Reviews

Great Value

By John
Rated 5 out of 5
Date: 2026-09-22

The sound is unsurpassed, for open air headphones at any price. They retain a tight fit, and stay on in all positions and movements. Great for outside work, a nice escape. I twist a pen spring on the plug and wire as a strain relieve. Hopefully they'll last longer?

Delicate design but great sound

By Stephen
Rated 4 out of 5
Date: 2025-08-18

I like my new headphones. The detachable ear piece is a bit delicate so be sure to store them in the included tote bag!

See any errors on this page?

Do these headphones come with a mic?

Do these headphones come with a mic?
Asked by: savannah
no microphone, just good headphones
Answered by: Preston
Date published: 2021-06-12

Do they come with a mic input?

Do they come with a mic input?
Asked by: savannah
No, they don't!
Answered by: Massimo
Date published: 2021-06-10

question

Given their impedance is 60 Ohms (most portable headphones have low impedance - less than 30 ohms), will they sound loud enough from a cell phone?
Asked by: George
These headphones are extremely efficient and you will not have problems getting enough power out of them from standard PC headphone jacks, cel phones, etc. They sound great. It will be one of the best headphone purchases you've made under $100. The only thing is that the metal headband easily catches one's hair. So be careful when removing them! I have pulled hairs out!
Answered by: MAXIMILIAN K.
Date published: 2020-03-23

question

Is the plug bent
Asked by: Garrett F.
Yes. Great sound at any price.
Answered by: HARVEY S.
Date published: 2018-08-27
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