On the rear of the TT-900 Turntable, you will find a switch labeled "BT | PH" to choose playback mode; Left/BT being Bluetooth and Right/PH being Phono (Vinyl Record Player.)
To use Bluetooth, move the switch to BT to enter Bluetooth mode. The power indicator LED will flash Blue to show Bluetooth is in pairing mode. On your Bluetooth device (Tablet, Smartphone, etc.) select "GEMINI TT-900" as your Bluetooth audio output device. The power LED indicator will be lit in solid blue to show a successful connection. You may now stream audio from your Bluetooth to the TT-900. You may use your Bluetooth device or the TT-900's volume knob to adjust the volume to the desired level.