Bose Acoustimass 300 Wireless Bass Module Do you know difference between hearing bass and feeling the thunder? You will when you add this wireless bass module to your SoundTouch 300 soundbar. QuietPort technology and a highly advanced DSP virtually eliminates distortion and delivers surprisingly deep and clean sound from something so small. So pop in your favorite action movie or live concert footage and prepare to be blown away. Let the thunder roll! What You Get Acoustimass 300 bass module AC power cord Quick-start guide Manufacturer's 1-year limited warranty Good to Know The Acoustimass 300 can only be added to the Bose SoundTouch 300 soundbar (sold separately).