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 Porta Pro On Ear Headphones with Case, Black / Silver User Manual

August 22, 2022

Koss Porta Pro On Ear Headphones with Case, Black / Silver Specifications BRAND: Koss MODEL NUMBER: 6303157 COLOR: Black/Silver EAR PLACEMENT: On Ear FORM FACTOR: On Ear CORD: Straight Dual entry 4ft DISTORTION: < 0.2% IMPEDANCE: 60 Ohms (at 1kHz)…

Brand: KOSS

Koss SB42 Communications Headphone User Guide

August 7, 2022

Koss SB42 Communications Headphone Specifications BRAND: Koss COLOR: Original CONNECTIVITY TECHNOLOGY: Wired MODEL NAME: SB42 FORM FACTOR: Over-Ear PLUGS: 3.5 m SPECIAL FEATURES: Sports & Exercise PRODUCT DIMENSIONS: 8.4 x 7.1 x 2.1 inches ITEM WEIGHT: 9.6 ounces Introduction Koss…

Brand: Koss

Koss BT221i Wireless Bluetooth Ear Clips, In-Line Microphone-Complete Features/User Manaul

July 22, 2022

Koss BT221i Wireless Bluetooth Ear Clips, In-Line Microphone Specifications Product Dimensions 0.98 x 0.98 x 0.98 inches Item Weight 2.29 ounces Batteries 1 Lithium Polymer batteries Connectivity Technology Wireless Form Factor Over Ear Support Standard 802.15.1 Frequency Range 2402-2480MHz Brand…

Brand: Koss

KOSS BT330I Bluetooth Headset Instructions

July 2, 2022

KOSS BT330I Bluetooth Headset Music Music play/pause Press Multifunction button once to play/ pause music. (Some media devices may require you to start a media player first). Next track/previous track Press and hold the Volume + for 2 seconds to…

Brand: KOSS

KOSS BT740IQZ Bluetooth Wireless Headset User Manual

June 26, 2022

KOSS BT740IQZ Bluetooth Wireless Headset In The Box The following items are included: Product Overview Status Indicator Pairing Pair One Device Note: When the headphones and device have been paired once, they will automatically connect when the headphon es is…

Brand: KOSS

KOSS TWS150i True Wireless Earbuds Instructions

June 22, 2022

KOSS TWS150i True Wireless Earbuds Start Included Earbuds Charging Case Ear Cushions Charging Cable Instructions Product Overview Charging case with battery life status lights USB charging port Earbud status light Touch strip Voice mic Acoustlcal vent hole UR indicator Magnetic…

Brand: KOSS

Koss KSC75 Portable Stereophone Headphones-Complete Features/Instruction Manual

June 16, 2022

Koss KSC75 Portable Stereophone Headphones Specifications CONNECTIVITY TECHNOLOGY: Wired CONNECTOR TYPE: 3.5mm Jack NOISE CONTROL: None AUDIO SENSITIVITY: 101 dB SPECIAL FEATURE: Sports-Style PRODUCT DIMENSIONS: 6.5 x 2.5 x 6.5 inches ITEM WEIGHT: 1.52 ounces Introduction It is Portable headphones…

Brand: KOSS

Koss C060 Wireless Communication Headset User Manual

April 26, 2022

C060 Wireless Communication Headset C060 In the Box Controls & Features Pairing For first use, press and hold the power button for 5 seconds or more Choose" C060 "to connect The headset will automatically connect to your device after the…

Brand: KOSS

$Koss KPH7B Portable On-Ear Headphone-Complete Features\Instruction Manual$

Koss KPH7B Portable On-Ear Headphone-Complete Features\Instruction Manual

April 5, 2022

Koss KPH7B Portable On-Ear Headphone Specifications Product Dimensions 8.6 x 2.1 x 6.1 inches Item Weight 2.81 ounces Best Sellers Rank #68 in On-Ear Headphones Connectivity Technology Wired Form Factor On Ear Official brand: Koss Input Impedance 32 ohm Headphones…

Brand: KOSS

KOSS 193582 Porta Pro Wireless Bluetooth On-Ear Headphones Instructions

April 5, 2022

Porta Pro Wireless Bluetooth Discovery Mode To enter Bluetooth discovery mode, from an off state, depress and hold the center button until light flashes red and blue. red & blue (flashing) Select "Koss Porta Pro Wireless" on…

Brand: KOSS

Koss BT540i Bluetooth Wireless Headphones User Guide

User Manual • April 7, 2026

Official user guide for the Koss BT540i Bluetooth wireless headphones, detailing setup, pairing, controls, safety precautions, and compliance information. Learn how to connect and use your headphones.

Brand: Koss

Koss BT740i QZ Wireless Headphones: User Manual & Features

User Manual • April 7, 2026

Explore the Koss BT740i QZ wireless headphones with this user manual. Learn about pairing, call handling, music playback, active noise cancellation (ANC), charging, and safety guidelines for your Koss headphones.

Brand: Koss

Koss KSC35 Wireless Bluetooth Headphones User Manual and Safety Guide

User Manual • April 7, 2026

Concise guide to setting up, using, and maintaining your Koss KSC35 Wireless Bluetooth headphones, including pairing instructions, controls, safety warnings, and technical specifications.

Brand: Koss

Koss HB70 Infrared Wireless Stereophone Owner's Manual

Owner's Manual • April 7, 2026

Owner's manual for the Koss HB70 Infrared Wireless Stereophone, providing setup, operation, troubleshooting, and detailed warranty information.

Brand: KOSS

Koss Lifetime Limited Warranty Information

Warranty Certificate • April 7, 2026

Detailed information about the Koss Lifetime Limited Warranty, including coverage, exclusions, claim procedures, and legal rights for Koss audio products.

Brand: Koss

Koss IR-781+IR-788T Wireless TV Headphones Quick Start Guide

quick start guide • April 7, 2026

Quick start guide for the Koss IR-781+IR-788T wireless TV headphones, covering setup, operation, and important notes for optimal audio experience. Includes component identification and usage instructions.

Brand: Koss

Koss BT115i Bluetooth Headset User Manual and Specifications

User Manual • April 7, 2026

Comprehensive user guide and technical specifications for the Koss BT115i Bluetooth Headset, detailing pairing, controls, charging, safety, and compliance information.

Brand: KOSS

Koss JR/900 Cordless RF Stereophone System User Manual

User Manual • April 7, 2026

Operating instructions, setup guide, and troubleshooting for the Koss JR/900 Cordless RF Stereophone System. Learn about system components, controls, connection, battery recharging, and resolving common issues.

Brand: Koss

Koss HB70 Infrared Wireless Stereophone Owner's Manual

Owner's Manual • April 7, 2026

Owner's manual for the Koss HB70 Infrared Wireless Stereophone, providing setup instructions, component details, troubleshooting tips, and lifetime warranty information.

Brand: Koss

Koss HB79s/HB80s/HB90s Infrared Wireless Stereophone Owner's Manual

Owner's Manual • April 7, 2026

Owner's manual for Koss HB79s, HB80s, and HB90s infrared wireless stereophones. Includes components, setup instructions, troubleshooting, and lifetime limited warranty information.

Brand: Koss

Koss Plug Wireless Bluetooth Headset User Manual and Safety Information

User Manual • April 7, 2026

Comprehensive guide for the Koss Plug Wireless Bluetooth Headset, covering setup, controls, charging, safety warnings, and technical specifications. Learn how to pair, use, and maintain your Koss headphones.

Brand: Koss

Koss BT232i Bluetooth Wireless Headphones User Guide

User Manual • April 7, 2026

User guide for the Koss BT232i Bluetooth wireless headphones. Learn about pairing, controls, charging, safety precautions, specifications, and warranty information from Koss Corporation.

Brand: KOSS

Koss SB-45 Communication Stereophones User Manual

SB-45 • November 9, 2025 • Amazon

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

Brand: Koss

Koss KUSB-50 Analog Audio Pass Through Cord User Manual for KPH30 Wireless and Porta Pro Wireless

KUSB-50 • October 31, 2025 • Amazon

Comprehensive instruction manual for the Koss KUSB-50 Analog Audio Pass Through Cord, detailing setup, operation, maintenance, troubleshooting, and specifications for use with KPH30 Wireless and Porta Pro Wireless headphones.

Brand: Koss

Koss KPH7 Lightweight Portable Headphone User Manual

KPH7 • October 7, 2025 • Amazon

User manual for the Koss KPH7 Lightweight Portable Headphone, providing setup, operation, maintenance, and troubleshooting information.

Brand: Koss

Koss CS340BT QZ Wireless Bluetooth On-Ear Communication Headset Instruction Manual

CS340BT QZ • October 4, 2025 • Amazon

Comprehensive instruction manual for the Koss CS340BT QZ Wireless Bluetooth On-Ear Communication Headset, covering setup, operation, maintenance, troubleshooting, and specifications.

Brand: Koss

Koss CL/20 Clear Transparent On-Ear Headphones User Manual

CL/20 • September 26, 2025 • Amazon

Official instruction manual for the Koss CL/20 Clear Transparent On-Ear Headphones, covering setup, operation, maintenance, and specifications.

Brand: Koss

Koss CS100 USB On-Ear Headset Instruction Manual

CS100-USB • September 15, 2025 • Amazon

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

Brand: Koss

Koss KPH40 Utility On-Ear Headphones User Manual

KPH40 Utility Parent • September 13, 2025 • Amazon

Comprehensive user manual for the Koss KPH40 Utility On-Ear Headphones, covering setup, operation, maintenance, troubleshooting, and specifications.

Brand: Koss

Koss BT232i Wireless Bluetooth Earclips User Manual

BT232i • September 12, 2025 • Amazon

User manual for Koss BT232i Wireless Bluetooth Earclips, covering setup, operation, maintenance, troubleshooting, and specifications for the sweat-resistant headphones with in-line microphone and remote.

Brand: Koss

Koss UR23iK Headphone User Manual

UR23iK • August 30, 2025 • Amazon

Official user manual for the Koss UR23iK Headphone, covering setup, operation, maintenance, troubleshooting, and specifications.

Brand: Koss

Koss KPH14K Side Firing Headphone - Official Instruction Manual

KPH14K • August 23, 2025 • Amazon

Comprehensive instruction manual for the Koss KPH14K Side Firing Headphones, covering setup, operation, maintenance, troubleshooting, and product specifications. Designed for active lifestyles with a focus on ambient awareness.

Brand: Koss

Koss KPH14i Retro Side-Firing On-Head Headphones User Manual

KPH14i • August 23, 2025 • Amazon

User manual for Koss KPH14i Retro Side-Firing On-Head Headphones with in-line microphone. Learn about setup, operation, maintenance, troubleshooting, and specifications for this wired audio device.

Brand: Koss

Koss UR18 Collapsible Home Headphones User Manual

UR18 • August 21, 2025 • Amazon

User manual for Koss UR18 Collapsible Home Headphones, covering setup, operation, maintenance, troubleshooting, and specifications.

Brand: Koss