Harman Kardon Onyx Studio 9 model HKOS9GRYJN. The system features one 120mm woofer and three 20mm tweeters with a frequency response of 50Hz to 20kHz and an S/N ratio of 80dB or higher. Bluetooth 5.3 is supported with profiles A2DP 1.4 and AVRCP 1.6, and transmission occurs at 2400–2483.5MHz.
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