“I find the high frequencies are muffled. I have my Samsung s21 ultra connected via bluetooth. Does the JBL 310 Partybox support the Samsung UHQ upscaler codec ? I want to try this function if it would help improve the fidelity with the high frequencies.”

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• Our JBL - PartyBox 310 Portable Party Speaker supports the following Bluetooth profile: A2DP 1.3, and AVRCP 1.6. We would also like to work with you directly to get more information and to do troubleshooting with the audio issues you're experiencing with our product. Please contact Customer Support at https://bit.ly/2WocMfi

  Answered by JBL Support 3 years ago

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