Marantz SR6009 - Manual (Page 211)

Usage Data
To help us improve our products and customer service, Marantz collects
anonymous information about how you use your AV receiver (such as
frequently used input sources and sound modes and speaker settings).
Marantz will never provide any information we collect to third parties.
Yes: Provide information on the operating status of this unit.
No: Do not provide information on the operating status of this unit.
Contents Connections Playback Settings Tips Appendix
211 Front panel Display Rear panel Remote Index