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KOSS Manuals & User Guides

Koss Corporation is a legendary American audio company specializing in high-fidelity stereophones, wireless headphones, and headsets for audiophiles and professionals.

Tip: include the full model number printed on your KOSS label for the best match.

About KOSS manuals on Manuals.plus

Koss Corporation is a pioneer in the personal audio industry, credited with inventing the world's first high-fidelity stereophones in 1958. Based in Milwaukee, Wisconsin, the company continues to design and manufacture a wide range of innovative audio products, including the iconic Porta Pro, noise-canceling headphones, communication headsets, and wireless Bluetooth solutions.

Guided by the principle that "Hearing is Believing," Koss is dedicated to providing accurate sound reproduction and exceptional listening experiences for music lovers, gamers, and professionals worldwide.

KOSS manuals

Latest manuals from manuals+ curated for this brand.

KOSS UTILITYBTA Bluetooth Adapter User Guide

July 24, 2025
USER GUIDE           LEGAL Utility BT Adapter Koss Corporation hereby declares that this wireless device, Bluetooth Headset, Model: KOSS UTILITY BTA is in compliance with the essential…

Koss PORTAPRO2P0 Bluetooth Headset Owner’s Manual

March 1, 2025
Koss PORTAPRO2P0 Bluetooth Headset Important Safety Information General Warnings Read all safety information before using the product. Keep the product away from water and moisture to prevent electric shock. Do…

koss QZ-99 Noise Reduction Headphones User Manual

November 23, 2023
koss QZ-99 Noise Reduction Headphones DESCRIPTION The KOSS QZ99 Passive Noise-Reducing Over-Ear Headphones are skillfully crafted to create an immersive listening experience by minimizing external distractions. Engineered with Pneumalite™ ear…

Koss KPH30i On-Ear Headphones User Manuals

November 2, 2022
Koss KPH30i On-Ear Headphones SPECIFICATION Brand Koss Model Name KPH30i Color Dark Grey Form Factor On Ear Connectivity Technology Wired Product Dimensions 6 x 2.5 x 7.2 inches Item Weight7…

KOSS manuals from online retailers

Koss KD250 DVD Player User Manual

KD250 • December 29, 2025
Comprehensive instruction manual for the Koss KD250 DVD Player, covering installation, operation, maintenance, troubleshooting, and technical specifications.

Koss SB-45 Communication Stereophones User Manual

SB-45 • November 9, 2025
Comprehensive user manual for the Koss SB-45 Communication Stereophones, providing detailed instructions on setup, operation, maintenance, troubleshooting, and product specifications.

Koss CS100 USB On-Ear Headset Instruction Manual

CS100-USB • September 15, 2025
Comprehensive instruction manual for the Koss CS100 USB Double Sided On-Ear Headset, covering setup, operation, maintenance, troubleshooting, and technical specifications.

KOSS support FAQ

Common questions about manuals, registration, and support for this brand.

  • How do I reset my Koss Bluetooth headphones?

    To reset many Koss Bluetooth models, turn the headset off, then press and hold the power button for approximately 10 seconds until you see a reset indication (often a flashing light).

  • Can I connect my Koss wireless headphones to multiple devices?

    Most Koss wireless headsets can only be connected to one active source device at a time. You may need to disconnect from the current device before pairing with a new one.

  • What is the warranty on Koss headphones?

    Many Koss products come with a Limited Lifetime Warranty. If the product fails due to a manufacturing defect, Koss will repair or replace it. Check the specific documentation included with your product for details.

  • How should I clean my Koss headphones?

    Clean your devices with a clean, dry cloth. Do not use liquid cleaners, solvents, or submerge the headphones in water.