Contact Us:

Koss offers the following User Manuals to help you learn about the features, settings and pairing process for your headphones.

For additional questions please contact Koss Customer Support:
Phone: 1-800-USA-KOSS (1-800-872-5677)
Email: customersupport@koss.com
Outside USA and Canada Email: customersupport-intl@koss.com

To download your headphone User Manual click your product(s) below:

BTS1 User Manual

BT115i User Manual

BT221i User Manual

BT232i User Manual

BT539i User Manual

BT540i User Manual

BT740i QZ User Manual

CS340BT QZ User Manual

ESP/950 User Manual

KPH7 Wireless User Manual

KSC35 Wireless User Manual

Porta Pro Wireless User Manual

TWS150i User Manual

TWS250i User Manual

Wireless TV Headphones User Manual