Denon AVR-X6700H Home theater receiver

2 years old, used in a smoke free home. 

Product highlights:

Power and processing:

• 11-channel amplifier
• 140 watts per channel into 8 ohms (20-20,000 Hz) at 0.05% THD, with 2 channels driven
• Dolby®, DTS®, and Auro-3D® surround sound decoding
  • Dolby Atmos® processing for use with in-ceiling or "height" speakers for more enveloping home theater sound
  • Dolby Atmos Height Virtualization and DTS Virtual:X® create three-dimensional effects without height speakers
• IMAX® Enhanced reproduces the full dynamic range of specially encoded IMAX soundtracks from compatible sources
• analog-to-HDMI video conversion
• upscales standard-definition video signals to HD and Ultra HD (up to 8K)
• Audyssey speaker calibration and system optimization includes:
  • MultEQ® XT32 auto setup and room calibration delivers balanced, dynamic sound with enhanced surround performance
  • Dynamic Volume anticipates loud sounds to keep volume levels even
  • Dynamic EQ improves dialogue, bass response, and surround channel levels at lower volumes
  • Sub EQ HT provides individual calibration for dual subwoofers, for even bass response throughout the room
  • Low Frequency Containment reduces the amount of bass that bleeds into other rooms
  • Audyssey MultEQ Editor app for further audio customization (paid app; not included)

Digital and streaming music options:

• built-in Wi-Fi for listening to music from a networked PC, free internet radio, and music services
• HEOS Built-in technology wirelessly connects compatible HEOS components for whole home audio
  • includes support for Pandora®, SiriusXM, and Spotify® (subscription required for some services)
  • free HEOS app offers easy Wi-Fi control, settings adjustments, and music selection and playback
  • works with voice control assistants
• Apple AirPlay 2 lets you stream directly from an iPhone® or iPad® and ask Siri to play Apple Music®
  • supports multi-room audio with compatible wireless speakers
• built-in Bluetooth for wireless music listening with smartphones, tablets, and compatible computers
• Bluetooth transmission for sending audio from the receiver to Bluetooth-enabled headphones
  • play audio through Bluetooth headphones only, or through Bluetooth headphones and connected speakers simultaneously
• plays high-resolution digital music files via USB storage device or a networked computer (PCM up to 24-bit/192kHz resolution; DSD up to 5.6 MHz)
• Denon's Compressed Audio Restorer improves sound quality of MP3s and other digital music files
• works as a Roon player (requires subscription and Roon Core running on your network)
  • Roon Core is media server software that runs on your computer, NAS drive, or other compatible hardware

Multi-room audio/video:

• three-room/three-source output
  • powered stereo outputs for second and third rooms allow playback in three rooms at once
  • All Zone Stereo mode ensures that all zones stay in sync when playing the same source
  • All Zone TV Audio lets you play surround sound in your main room and downmixed stereo in your 2nd and 3rd rooms
  • supports both analog and digital audio connections
  • HDMI dual-zone switching for watching video content from different sources in two zones simultaneously
  • Zone 2 compatible audio sources: HDMI audio, optical/coaxial digital inputs, analog audio inputs, AM/FM tuner, USB, Bluetooth, and HEOS music apps
  • cannot select different USB/Bluetooth/network sources for each zone

Connections:

• HDMI 2.1 audio/video switching: 8 in (includes 1 front-panel input), 3 out
  • 1 input and 2 outputs support 8K/60Hz and 4K/120Hz video
  • all inputs and outputs support 4K/60Hz video
  • HDCP 2.3 technology ensures compatibility with Ultra HD sources and TVs
  • HDR-compatible for extended picture contrast and brightness with compatible TVs and HDR-encoded content
  • supports HDR10, HDR10+, Dolby Vision™, and HLG
• gaming-optimized video processing technologies for a smooth, lag-free gaming experience
  • Variable Refresh Rate (VRR), Auto Low Latency Mode (ALLM), and Quick Frame Transport (QFT) reduce or eliminate lag and frame tearing
• supports ARC (Audio Return Channel) and eARC (Enhanced Audio Return Channel)
  • eARC receives uncompressed surround sound signals including Dolby Atmos and DTS:X via the HDMI connection with your compatible TV
• component video switching: 2 in, 1 out
• composite video switching: 4 in, 2 out
• digital audio inputs: 2 Toslink optical, 2 coaxial
• 6 analog stereo RCA audio inputs
• MM (moving magnet) phono input for connecting a turntable
• 13.2-channel preamp outputs
• two discrete line-level subwoofer outputs for more precise multi-subwoofer setups
• front-panel USB port for audio playback from USB flash drives
• Ethernet port for network connection
• outputs for 13 speakers (Front L/R, Center, Surround L/R, Surround Back L/R, Height1 L/R, Height2 L/R, Height3 L/R)
  • receiver can power a maximum of 11 channels at once
• RS-232C, remote (IR), and 12-volt trigger connections for use with optional third-party controller
• full-sized headphone jack
• removable power cord

General features:

• free Denon AVR Remote app lets you use your Apple® or Android™ device as a Wi-Fi remote
• Setup Assistant guides you through the initial connection process and settings
• HDMI standby pass-through allows HDMI switching without powering up receiver
• intuitive, full-color on-screen guide
• AM/FM tuner
• remote control
• 17-3/16"W x 6-9/16"H x 15-15/16"D (9-5/16"H with Wi-Fi antennas raised)
• weight: 32 lbs.
• warranty: 3 years