I'm on my second Player that plays Multi-channel audio. First one,the Yamaha C750 played both and the one i have noe,Sony DVPNC-555ES plays just SACD. The one common thread i found in both is lack of bass. Is it me or is it the way it is? I've had the level on the sub up all the way on the player bass management and the volume on my sub maxed. Speakers set to small and large and still a lack of bass.