My headphones won't turn on after charging for an hour. There are no sounds or lights.
Based on the manual for the KOSS BT740IQZ Bluetooth Wireless Headset, here are some points regarding charging and power indicators: The manual states that…
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Koss questions & answers
Browse answered questions about Koss, including setup, troubleshooting, compatibility and maintenance.
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Answered questions
How do I disable the Bluetooth pairing with my phone to switch to a different mobile device?
To switch your Koss Porta Pro Wireless (PORTAPRO2P0) to a different mobile device, you need to put the headset back into pairing mode. Follow…
How do I unpair or disconnect the Koss Porta Pro Wireless headphones from a device?
To unpair or disconnect your Koss Porta Pro Wireless headphones from a device, you can use the following methods: On your device: Go to…
Can I use the Koss KPH7 headphones with my iPhone?
Yes, you can use the Koss KPH7 headphones with your iPhone. However, since the iPhone does not have a 3.5mm audio port, you will…
How do I adjust the size of the headband on the Koss Porta Pro on-ear headphones?
To adjust the size of the headband on the Koss Porta Pro on-ear headphones, follow these steps: 1. Hold the headphones with one hand…
How long is the cord of the Koss KPH7B Portable On-Ear Headphone?
The Koss KPH7B Portable On-Ear Headphone comes with a 4 ft tangle-free cord. This length provides ample flexibility and convenience for connecting to your…
How do I attach the Koss KSC75 headphones correctly?
To attach the Koss KSC75 headphones correctly, follow these steps: 1. The Koss logo on the side of the headphones should be facing up.…
How do I pair the Koss BT221i Wireless Bluetooth Ear Clips with my device?
To pair the Koss BT221i Wireless Bluetooth Ear Clips with your device, follow these steps: 1. Make sure the ear clips are turned off.…
How do I remove the boom mic from the Koss SB42 Communications Headphone?
To remove the boom mic from the Koss SB42 Communications Headphone, simply detach it from the headphone by gently pulling it out from the…
How do I adjust the fit of the Koss Porta Pro On Ear Headphones?
To adjust the fit of the Koss Porta Pro On Ear Headphones, follow these steps: 1. Place the headphones on your head with the…
How do I adjust the fit of the Koss CC_01 Isolation Earbud Stereophone?
To adjust the fit of the Koss CC_01 Isolation Earbud Stereophone, follow these steps: 1. Locate the knurled dial on the earbud. It is…
How do I properly use the Koss QZ-77 Active Noise Reduction Ear Plugs?
To properly use the Koss QZ-77 Active Noise Reduction Ear Plugs, follow these steps: 1. Roll the earplug up into a small, thin "snake"…
How do I use the microphone on the Koss KEB15i In-Ear Headphone?
The Koss KEB15i In-Ear Headphone features an in-line microphone that allows you to make and receive calls. To use the microphone, simply press the…
How do I clean the Koss RUK 50FP Full-Sized Stereophone?
To clean the Koss RUK 50FP Full-Sized Stereophone, you can follow these steps: 1. Use a soft cloth, cleaning solution containing alcohol, or disinfectant…
How do I connect the Koss UR20 Over-Ear Headphones to my device?
To connect the Koss UR20 Over-Ear Headphones to your device, follow these steps: 1. Locate the headphone jack on your device. It is usually…
How do I connect the Koss KTXPRO1 wired headphones to my device?
To connect the Koss KTXPRO1 wired headphones to your device, please follow these steps: 1. Verify the physical audio output of your device. Make…
How do I connect the Koss SportaPro headphones to my device?
To connect the Koss SportaPro headphones to your device, please follow these steps: 1. Verify the physical audio output of your device: Locate the…
How do I adjust the volume on the Koss UR29 Collapsible Portable Headphones?
To adjust the volume on the Koss UR29 Collapsible Portable Headphones, you can use the volume control feature located on the cord. This allows…
How do I connect the Koss KPH30i wired headphones to my device?
To connect the Koss KPH30i wired headphones to your device, please follow these steps: 1. Verify the physical audio output of your device. Make…
How do I adjust the volume on the Koss QZ-99 Noise Reduction Headphones?
The volume control on the Koss QZ-99 Noise Reduction Headphones is conveniently located on the ear cup for easy adjustment. To adjust the volume,…
How do I load a CD into the KOSS CDP2581 Personal CD Player?
Loading a CD into the KOSS CDP2581 Personal CD Player is a simple process. Please follow the steps below: 1. Make sure the CD…