The pioneer vsx531b features both dolby truehd and dts hd surround sound processors which makes an ideal entry into the world of high definition surround sound with 100 watt per channel the vsx531b has the power to fill all but the largest rooms and makes even the best tv sound tinny by comparison with a built in bluetooth receiver its perfect to enjoy to your own music from your devices wirelessly or through music streaming services like spotify deezer and tidal focused on value the pi