z4 It cannot be selected when headphones are used, or when a speaker configuration with any height speakers is used.
z8 The sound mode that can be selected differs depending on the audio format of the input signal and the number of channels.
z9 This cannot be selected when headphones are used.
z13 Selectable when "Surround Parameter" - "IMAX" is set to "Auto" in the menu. When "IMAX" is set to "Off", playback is normal DTS or DTS:X. (v p. 183)