1. Product Overview
The Koss Porta Pro Black On-Ear Headphones offer a retro style with modern acoustic performance. Designed for deep bass, these headphones provide a comfortable and secure fit with adjustable features and multi-pivoting ear plates. Their collapsible design ensures maximum portability, making them an ideal companion for on-the-go listening.

Image: Koss Porta Pro Black On-Ear Headphones, front view.
Video: Official overview of the Koss Porta Pro On-Ear Headphones, highlighting key features and design.
2. Setup and Adjustments
The Porta Pro headphones are designed for a personalized fit. Follow these steps for optimal comfort and sound:
- Adjust Headband: Extend or retract the metal headband to fit your head size.
- Position Ear Plates: The multi-pivoting ear plates allow for flexible positioning. Ensure the foam pads sit comfortably on your ears.
- Utilize ComfortZone Pads: Located on the temporal pads, the ComfortZone slider allows you to shift pressure between the ear pads and the temporal pads. Slide it towards "FIRM" for more pressure on the ears, or towards "LIGHT" for less pressure, balancing it with the temporal pads.
- Connect to Device: Plug the 3.5 mm stereo jack connector into your audio device (e.g., smartphone, tablet, computer). For devices without a 3.5mm jack (like newer iPhones), an appropriate adapter will be required.

Image: Side view of Koss Porta Pro headphones, highlighting the adjustable headband and ear plate mechanism.

Image: Close-up of the ComfortZone slider on the temporal pad, showing "LIGHT" and "FIRM" settings.
3. Operating Your Headphones
Once connected, simply play your desired audio content from your device. The dynamic elements of the Porta Pro deliver extended frequency response and deep bass performance for an immersive listening experience.
- Volume Control: Adjust the volume directly from your connected audio device.
- Sound Quality: The open-back design allows for a natural soundstage, providing clear and crisp audio across the frequency spectrum.

Image: A person wearing the Koss Porta Pro headphones, demonstrating typical use.
4. Maintenance and Care
To ensure the longevity and optimal performance of your Koss Porta Pro headphones, regular maintenance is recommended:
- Cleaning: Gently wipe the exterior surfaces with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials.
- Ear Pad Replacement: The foam ear pads are replaceable. If they become worn or damaged, new pads can be easily installed. Gently remove the old pads and snap the new ones into place.
- Storage: Utilize the collapsible design and included carrying case for protective storage when not in use. This helps prevent tangling of the cable and protects the headphones from damage.

Image: Various colored replacement ear pads for Koss Porta Pro headphones.
5. Troubleshooting
If you encounter issues with your Koss Porta Pro headphones, consider the following common solutions:
- No Sound/Low Volume:
- Ensure the 3.5 mm jack is fully inserted into your audio device.
- Check the volume level on your audio device.
- Test the headphones with a different audio device to rule out a device-specific issue.
- Inspect the cable for any visible damage or kinks.
- Distorted Sound:
- Lower the volume on your audio device.
- Ensure the audio source is of good quality.
- Check for any debris or obstructions on the ear plates.
For further assistance, please refer to the warranty and support information.
6. Product Specifications
| Feature | Specification |
|---|---|
| Model Name | Porta Pro Black |
| Connectivity Technology | Wired |
| Headphones Jack | 3.5 mm Jack |
| Frequency Range | 15 Hz - 25 kHz |
| Impedance | 60 Ohm |
| Item Weight | 6.6 ounces |
| Product Dimensions | 5.6 x 2.5 x 7.2 inches |
| Included Components | Protective Case |
7. What's in the Box
Your Koss Porta Pro Black On-Ear Headphones package includes:
- Koss Porta Pro Black On-Ear Headphones
- Protective Case
8. Warranty and Support
The Koss Porta Pro Black On-Ear Headphones come with a Limited Lifetime Warranty. For warranty claims, technical support, or further inquiries, please refer to the contact information provided on the product packaging or visit the official Koss website.
For additional resources and FAQs, you may also visit the Koss Store on Amazon.





