Product highlights:

• 4K Ultra HD Blu-ray player designed for custom installs and high-end audio/video setups
• rigid frame-and-beam chassis design for reduced vibration
  • honeycomb-style top panel and offset insulator feet (removable) help stabilize the player
  • audio and video circuitry isolated by electrical shielding
• plays Ultra HD Blu-ray discs, 3D and standard Blu-ray discs, SACDs, DVD-Audio, DVDs, CDs and rewriteable discs
• full 4K video resolution for use with Ultra HD TVs and 4K projectors
  • 4K video upscaling for standard Blu-ray and DVDs
• supports lower resolutions when used with non-4K TVs
• HDR (High Dynamic Range) for extended picture contrast and brightness on compatible TVs
  • supports HDR10 and Dolby Vision™ formats
  • HDR-to-SDR conversion optimizes HDR content for a 4K screen without HDR
• "subtitle shift" feature keeps text on screen when watching in cinema scope 2:35:1 with a projector
• Quick Start/Load mode swiftly queues up a disc from the "off" position
• plays high-resolution digital music files via USB storage device; PCM files up to 24-bit/192kHz resolution, and 2.8 MHz DSD files
• plays Region A Blu-ray discs and Region 1 DVDs

Wireless video and music features:

• dual-band Wi-Fi for smooth wireless streaming
  • streaming video apps include Netflix, Amazon Prime Video, and YouTube (subscriptions required for some services)
• HEVC for watching streamed 4K content (Sony recommends internet speed of at least 25Mbps)
• Bluetooth transmitter sends audio from the player to Bluetooth-compatible headphones or speakers
  • LDAC Hi-Fidelity wireless music streaming to compatible sources

Technical specs and general info:

• selectable video resolution up to 3840 x 2160 pixels
• built-in audio decoding for Dolby® Digital, Dolby TrueHD, DTS®, and DTS-HD Master Audio
  • can pass Dolby Atmos and DTS:X soundtracks when HDMI output is set to "bitstream"
• plays AAC, AIFF, ALAC, DSD (.dff and .dfs files), FLAC, MP3, WMA, and WAV audio file formats
• front-panel USB port to play music, movies, and images from external hard drives and thumb drives
• BD-Live and BonusView support for added bonus features with compatible discs (requires external USB storage device)
• 2 HDMI outputs for separating audio and video signals
  • "VIDEO" HDMI output is HDMI 2.0a (connected 4K TV and/or receiver must have an HDCP 2.2-compatible HDMI input, and must have HDMI 2.0a to support HDR)
  • "AUDIO" HDMI output does not pass video signals
• optical and coaxial digital audio output
• 1 pair of gold-plated stereo RCA audio outputs
• RS-232C port for automated control systems
• Ethernet port for internet connectivity
• custom installers can have IP control over CAT-5 cable or Wi-Fi network
• compatible with Ihiji, a cloud-based remote maintenance system for installers
• remote control
• 17"W x 2-1/4"H x 10-1/2"D"

Condition is good for age and use. Tested, works. This unit was part of a professionally installed home theater setup.