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Is security code required for pairing?

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No security code is required.

Can I adjust the sound level on the optical output port?

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On most TV’s you cannot adjust the sound level on the optical output port. The level is fixed. When you have connected the optical output to a TosBlue unit via an optical cable – and paired the unit to a Bluetooth headphones, you may on most headphones adjust the sound level on the headphones.

This means that the sound level from the internal TV speakers are independent on the sound level in your headset.

Dolby/PCM – Which format can I use?

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The TosBlue units only accepts PCM data format on the optical input port – not Dolby.

NOTE: On most TV’s there is an option to switch between the 2 formats. Please check it out!