Pioneer DV-533 Operating Instructions Manual page 28

TruSurround (stereo audio sources) to produce a
surround sound effect from stereo speakers.
This function works only when connections are
made to ths AUDIO OUT jacks.
TruSurround
TruSurround uses technology that simulates
multlchannel surround sound using only two speakers
Notes
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There is no effect when the audio source is either DTS or
96 kHz LPCM or during CD or MP3 playback.
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The dlgital audio output level IS reduced when playing 2
channel Dolby DIgItal DVDs or Video CDs wth TruSurround
selected. If you play a multichannel Dolby DigItal DVD with
Dolby Digital to PCM conversion (see page 26) and
TruSurround selected, there is no digital output.
l
How good the surround effect is varies wth the disc.
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