Price Match Guarantee Yamaha SR-B20A Sound Bar with Built-In Subwoofers & Bluetooth Built-in subwoofers for deep bass in one slim sound bar. Clear Voice for enhanced dialogue clarity, DTS Virtual:X virtual 3D surround sound. Bluetooth streaming that allows easy switching between two devices. Simple setup with HDMI or optical. The B20A appears to replace the identically sized YAS-108 sound bar which also includes built-in subwoofers and DTS Virtual:X. Yamaha claims the dual built-in subwoofers in