Hi all. I have the latest version 16 on my ST 300 and AM 300 and have just tried the suggestion of doing a factory reset then disconnecting the power from the AM 300 and recalibrating the ST 300 using Adaptq. I then played some music through the ST 300 still with the AM 300 disconnected and the base response was good. I then reconnected the AM 300 and paired it and played some more music and was blown away with the performance. I am now a very happy Bose owner.