Which headsets are the HD speakers compatible with?

The 50S and the 5S already come with the HD speakers included so the SC-A0325 for the 50S is not necessary and the SC-A0326 for the 5S is not necessary.

Here are which Sena headsets are compatible with the HD speakers:

SC-A0325 - HD Speakers Type A

• 30K
• 20S EVO
• 20S

SC-A0326 - HD Speakers Type B

• 10C EVO
• 10C Pro

Note: To use the HD speakers on a compatible headset, the firmware version that includes HD Speaker Support needs to be installed on the headset.