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dlanor 15/05/2020
I've tested this device with three mobile devices (two tablets and one phone) with good results for the RX-mode allowing these devices to send audio to non-bluetooth speakers/amplifiers. So the RX-mode is fine. But I've also tested this device with three different stereo bluetooth headsets, using the TX-mode to allow my non-bluetooth TV set to send audio to the bluetooth headset in use, and the results of these tests were quite bad. With one of these high-quality headsets (a "Creative WP350") it was never possible to achieve bluetooth pairing,despite many attempts. With the other two headsets (an AudioTechnica "ATH-ANC40BT" and a Jabra "Halo Smart") pairing did work but with sporadic failures and one unacceptable problem affecting all connection attempts. This problem is that in TX-mode this device treats each reconnection to an earlier paired headset/headphone as a brand-new pairing session, which is NOT what those devices were designed for, which is why reconnection almost always fails and requires multiple re-pairing attempts. So switching from one headset to another (as needed when batteries need recharge) is a process likely to consume several minutes, all due to the faulty pairing method. In short: RX-mode works fine, but TX-mode needs the pairing process to be recoded. Because of the broken TX-mode pairing method I will not be able to use the device for my intended purpose.
Comments (2)
  • Banggood Dear dlanor,Thank you for your feedback and we are really sorry for all the inconvenience caused during your shopping and looking forward to solving your problem.We have already received your feedback for the order. We would like to try our best to provide you the best solutions. For this reason, if your questions have not been solved yet, please do not hesitate to contact us via the link: and provide more details about your question so that we can confirm the case as soon as possible and solve it efficiently.And we will reply and offer you the best solutions after receiving your email within 24-48 hours.Best regards,Banggood Team

  • luismcr Hidlanor
    I also had similar issues with another KN321 device on TX.
    1. They claim to be dual link, but I can hardly pair one device
    2. When I turn off the headset it rarely reconnects again (stays on blink/pair)
    3. no info on how to clear the pairing on the device

    Reply 09/12/2020
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