Denon AVR-S660H Owner's Manual page 192

Contents Connections
"Restorer" cannot be selected.
Check that an analog signal or PCM signal (Sample Rate = 44.1/48 kHz) is input. For playback of multichannel signals such as Dolby Digital or DTS
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surround, "Restorer" cannot be used. (v p. 127)
Switch to a sound mode other than "Direct". (v p. 99)
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Sound mode settings are not available when using Bluetooth headphones. Audio menu settings are also not available.
This unit cannot change sound mode or audio menu settings for audio output to Bluetooth headphones.
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Front panel Display
Playback Settings
192
Rear panel
Tips
Remote Index
Appendix