KOSS Manuals & User Guides

User manuals, setup guides, troubleshooting help, and repair information for KOSS products.

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

KOSS manuals

Latest posts, featured manuals, and retailer-linked manuals for this brand tag.

Koss UR29 Collapsible Portable Headphones User Manuals

November 2, 2022

Koss UR29 Collapsible Portable Headphones SPECIFICATION BRAND Koss COLOR Black, Silver FORM FACTOR On Ear CONNECTIVITY TECHNOLOGY Wired SPECIAL FEATURE volume-control PRODUCT DIMENSIONS 75 x 3.5 x 7.5 inches ITEM WEIGHT 4 ounces DEPARTMENT Electronics ITEM MODEL NUMBER UR29 WHAT’S…

Brand: Koss

KOSS TWS250i True Wireless Earbuds User Guide

October 29, 2022

KOSS TWS250i True Wireless Earbuds In the Box Pairing For first use, hold the touch surfaces of both the left and right earbuds for 2 seconds or more. The earbuds will power on and enter pairing mode (shown with blue…

Brand: KOSS

Koss 155475 SportaPro Stereo Headphones Instruction Manual

October 28, 2022

Koss 155475 SportaPro Stereo Headphones SPECIFICATION Brand Koss Model Name SportaPro Color Black Form Factor On Ear Connectivity Technology Wired Product Dimensions 7 x 2 x 7.5 inches Item Weight 8 ounces WHAT’S IN THE BOX Stereo Headphones PRODUCT DESCRIPTION…

Brand: KOSS

Koss KTXPRO1 Titanium Portable Headphones Operational Guide

October 27, 2022

Koss KTXPRO1 Titanium Portable Headphones SPECIFICATION BRAND Koss MODEL NAME KTXPRO1 COLOR Black, Silver FORM FACTOR Semi-open-back CONNECTIVITY TECHNOLOGY Wired PRODUCT DIMENSIONS 2 x 7.2 x 2 inches ITEM WEIGHT 4 ounces FIT On-Ear CONNECTION Wired (3.5mm plug) MICROPHONE No…

Brand: KOSS

Koss UR20 Over-Ear Headphones USER GUIDE

October 16, 2022

Koss UR20 Over-Ear Headphones

Brand: Koss

KOSS CS340BT QZ Wireless Communication Headset User Guide

October 4, 2022

QZ Wireless Communication Headset User Guide In the Box Controls & Features Pairing For first use, press and hold the power button for 5 seconds or more Choose"KOSS CS34OBT OZ to connect Note: Headset will automatically connect to your device…

Brand: KOSS

Koss RUK 50FP Full-Sized Stereophone Operational Guide

September 25, 2022

Koss RUK 50FP Full-Sized Stereophone Specifications Product Dimensions: 6 x 2.4 x 8.2 inches Item Weight: 5 ounces Item model number: RUK 50FP Special Feature: Noise-Isolating Form Factor: In-Ear Connector Type:5mm Jack Noise Control : Sound Isolation Audio Sensitivity: 99…

Brand: KOSS

Koss KEB15i In-Ear Headphone, Blue User Guide

September 24, 2022

Koss KEB15i In-Ear Headphone, Blue Specifications Product Dimensions: 6 x 2.7 x 1.1 inches Item Weight: 1.28 ounces Item model number: KEB15iB Special Feature: Lightweight Headphones Jack: 3.5 mm Jack What’s in the box? Keb15i In-ear Earbuds with Microphone (blue)…

Brand: KOSS

Koss QZ-77 Active Noise Reduction Instruction Guide

September 15, 2022

Koss QZ-77 Active Noise Reduction Specification Brand Koss Model Name QZ-77 Color Silver Form Factor In Ear Connectivity Technology Wired Product Dimensions 1 x 1 x 1 inches Item Weight 1 pounds What’s In the Box Active Noise Reduction Ear…

Brand: KOSS

Koss CC_01 Isolation Earbud Stereophone USER MANUAL

September 12, 2022

Koss CC_01 Isolation Earbud Stereophone Specifications Form Factor:In Ear Connectivity Technology:Wired Product Dimensions:31 x 7.28 x 2.36 inches Item Weight:9 ounces Material: Leather Item model number: CC_01 Product Description With its exclusive Custom Fit dial, the Koss CC 01 isolating…

Brand: Koss

Koss Plug Wireless Bluetooth Headset User Manual

User Manual • April 8, 2026

User manual for the Koss Plug Wireless Bluetooth headset, detailing operation, controls, LED indicators, charging, safety precautions, technical specifications, and compliance information. Includes FCC and CE declarations.

Brand: Koss

Koss Lifetime Limited Warranty for Headphones - QZ-99

Warranty Certificate • April 8, 2026

Understand the Koss Lifetime Limited Warranty for headphones, including coverage details, how to claim, exclusions, and contact information for models like the QZ-99 Noise Reduction Stereophone.

Brand: Koss

Koss BT115i Bluetooth Headset: User Guide and Specifications

instruction manual • April 8, 2026

Comprehensive user guide for the Koss BT115i Bluetooth Headset, covering pairing, controls, charging, safety, and technical specifications. Learn how to connect and use your Koss wireless earbuds.

Brand: KOSS

Koss Lifetime Limited Warranty - Coverage, Claims, and Exclusions

Warranty Certificate • April 8, 2026

Detailed information on the Koss Lifetime Limited Warranty, including what is covered, how to make a claim, exclusions, and legal rights. Contact information for Koss repair and support.

Brand: Koss

Koss Plug Wireless Bluetooth Headset User Guide

User Manual • April 8, 2026

User guide for the Koss Plug Wireless Bluetooth headset. Learn how to pair, control playback, charge, and understand indicator lights. Includes safety and compliance information.

Brand: Koss

Koss BT539i Bluetooth Wireless Headphones User Manual

User Manual • April 8, 2026

Concise user guide for the Koss BT539i Bluetooth wireless headphones, detailing setup, pairing, controls, charging, safety precautions, and technical specifications.

Brand: Koss

Koss Porta Pro Wireless Bluetooth Headphones User Manual and Specifications

User Manual • April 8, 2026

Official user manual and technical specifications for the Koss Porta Pro Wireless Bluetooth headphones, covering setup, controls, safety, and compliance information.

Brand: KOSS

KOSS TWS250i True Wireless Earbuds User Manual

User Manual • April 7, 2026

Explore the KOSS TWS250i True Wireless Earbuds. This guide covers pairing, Bluetooth connection, touch controls, charging, reset procedures, product specifications, and important safety warnings.

Brand: KOSS

Koss KPH7 Wireless Bluetooth Headset: Pairing, Controls, and Safety Guide

Quick Start Guide • April 7, 2026

Official guide for the Koss KPH7 Wireless Bluetooth Headset. Learn how to pair, use controls, charge, and understand safety and compliance information.

Brand: KOSS

Koss EQP1/EQP2 Portable Amplifier with Sportclip Stereophones User Guide

user manual • April 7, 2026

User guide for the Koss EQP1 and EQP2 portable amplifiers, detailing setup, operation, components, warranty, and safety information for enhanced audio experiences.

Brand: Koss

Koss Product Warranty Information and Claim Procedures

Warranty Information • April 7, 2026

Detailed warranty information for Koss headphones and accessories, including limited lifetime, 90-day, and one-year warranties, claim procedures, coverage, and exclusions.

Brand: Koss

Koss Headphones Warranty and Repair Guide

guide • April 7, 2026

Comprehensive guide to Koss headphone warranty, repair procedures, contact information, and product support, including details on limited lifetime, 90-day, and one-year warranties.

Brand: Koss

Koss Porta Pro Communication Headset Instruction Manual

PORTA PRO COMM. HEADSET • March 10, 2026 • Amazon

Official instruction manual for the Koss Porta Pro Double-Sided Communication Headset. Learn about setup, operation, maintenance, troubleshooting, and specifications for model PORTA PRO COMM. HEADSET.

Brand: Koss

Koss ESP-950 Electrostatic Stereophone User Manual

ESP950 • March 4, 2026 • Amazon

Comprehensive user manual for the Koss ESP-950 Electrostatic Stereophone, covering setup, operation, maintenance, troubleshooting, and specifications.

Brand: Koss

Koss Porta Pro Wireless Bluetooth On-Ear Headphones Instruction Manual

Porta Pro Wireless (Model 193582) • February 25, 2026 • Amazon

Comprehensive instruction manual for the Koss Porta Pro Wireless Bluetooth On-Ear Headphones (Model 193582), covering setup, operation, maintenance, troubleshooting, and specifications. Features include Bluetooth 4.1 with apt-X, 12+ hour battery life, in-line microphone, volume control, and adjustable headband.

Brand: Koss

Koss TWS250i True Wireless Earbuds Instruction Manual

TWS250i • February 22, 2026 • Amazon

Official instruction manual for Koss TWS250i True Wireless Earbuds, covering setup, operation, maintenance, troubleshooting, specifications, and warranty information.

Brand: Koss

Koss BTS1 Bluetooth Speaker User Manual

BTS1 • February 17, 2026 • Amazon

Instruction manual for the Koss BTS1 Bluetooth Speaker, covering setup, operation, maintenance, troubleshooting, and technical specifications.

Brand: Koss

Koss QZ-99 Noise Reduction Stereophone Instruction Manual

QZ99 • February 10, 2026 • Amazon

Instruction manual for the Koss QZ-99 Noise Reduction Stereophone, covering setup, operation, maintenance, and specifications for optimal audio isolation.

Brand: Koss

Koss Porta Pro Utility On-Ear Headphones Instruction Manual

Porta Pro Utility • January 16, 2026 • Amazon

Instruction manual for the Koss Porta Pro Utility On-Ear Headphones, covering setup, operation, maintenance, and specifications.

Brand: Koss

Koss BT221i Wireless Bluetooth Ear Clip Headphones Instruction Manual

BT221i • January 10, 2026 • Amazon

Comprehensive instruction manual for the Koss BT221i Wireless Bluetooth Ear Clip Headphones. Learn about setup, operation, maintenance, and specifications for your sweat-resistant headphones with in-line microphone and remote control.

Brand: Koss

Koss CS300-USB Double-Sided On-Ear Communication Headset User Manual

CS300-USB • January 2, 2026 • Amazon

Official user manual for the Koss CS300-USB Double-Sided On-Ear Communication Headset, providing detailed instructions for setup, operation, maintenance, troubleshooting, and specifications.

Brand: Koss

Koss KD250 DVD Player User Manual

KD250 • December 29, 2025 • Amazon

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

Brand: Koss

Koss SB45-USB Multimedia Stereo Headphone User Manual

SB45-USB • November 26, 2025 • Amazon

Comprehensive user manual for the Koss SB45-USB Multimedia Stereo Headphone, providing setup, operation, maintenance, and troubleshooting information.

Brand: Koss

Koss SB40 Computer Headset with Microphone Instruction Manual

SB40 • November 18, 2025 • Amazon

Comprehensive instruction manual for the Koss SB40 Computer Headset, covering setup, operation, maintenance, troubleshooting, and specifications for optimal performance.

Brand: Koss