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To find out what version of HDTT-5000 firmware you are running: To upgrade your firmware to the newest version: Warning: If the power is interrupted or the USB device is removed during this process, it can damage the operating system of the unit. As well, it is advisable that the unit is not moved...
We Want You Listening For A Lifetime! Dear Customer: To establish a safe level: Once you have established a comfortable sound level: Decibel Level Example...