Playing digital music or videos (from computer, CD player, etc) connected by optical or coaxial is more or less unuseable, as the 976 will produce a fade-in a the begining of each track. The input names that cannot be renamed to suit the sources. When the unit is muted and I move the volume control knob to un-mute it, if I move the volume a single clic, the sub will remain muted. If I power down my Blu-ray player while its input is still selected, the unit will go silent and must be power cycled to recover sound on every other sources. The number of inputs that is limited, when the actual connectors are there, sitting unused.