Lossless HD Sound Test. extreme audio video smooth movies films games sound world system bass subwoofer scratch pioneer loud speakers amp sounds .brbrFull 7.1 Surround Sound Speaker check. extreme audio video smooth movies films games sound world system bass subwoofer scratch pioneer loud speakers .brCheck out the new Dolby True HD 7.1 Speaker test Version which is louder and more detailed than this one plus dont forget the new tests that were recently .brThis video is to check your Sourround System (YouTube only supports 2 Channel Stereo Sound - but the sound is amazing) Try also the THX Surround Sound .