Denon AVR-X1700H 7.2-Channel Network A/V Receiver with HEOS - Manual (Page 95)

Getting the HEOS App
You can use many online music streaming services from the HEOS App. Depending upon your geographical location, there are several options to choose
from.
Download the HEOS App for iOS or Android by searching App Store, Google Play store or Amazon Appstore for “HEOS”.
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Contents Connections Playback Settings Tips Appendix
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Front panel Display Rear panel Remote Index