A:Answer Hi Dmm1965,
Thank you for your inquiry!
If you are referring to the decibel or watts, unfortunately, this is not a public specification that we disclose at this time. What we can tell you is that the X-Balanced Speaker Unit achieves high sound quality and powerful sound pressure for a richer, deeper, more rewarding listening experience. Know that as an audio loving company, Sony strives to give you the best sounding speakers.
Regards,
Carl