YAMAHA RX-V385 5.1-Channel 4K Ultra HD AV Receiver with Bluetooth
5.1 channel powerful surround sound with Bluetooth for wireless connectivity
Rated Output Power (1kHz, 1ch driven) 100W (8 ohms, 0.9% THD); Rated Output Power (20Hz 20kHz, 2ch driven) 70W (8 ohms, 0.09% THD); Maximum Effective Output Power (1kHz, 1ch driven) (Jeita) 145W (6 ohms, 10% THD)
HDMI with HDCP 2.3 (4 in/1 out)
4K/60 Ultra HD support, HDR10, Dolby vision, hybrid log gamma and BT.2020 provide incredible contrast, smooth tone and rich, bright colors
YPAO automatic room calibration technology for an immersive movie experience
Exclusive Yamaha Cinema DSP technology supports playback of HD Audio (Dolby TrueHD, DTS HD Master Audio, etc.), providing natural and expansive sound imaging.

Sony STRZA2100ES AV Audio & Video Component Receiver Black
7.2 Ch. A/V Receiver (105W @ 8ohms, 1KHz, 0.9%, 2CH)
Supports Dolby ATMOS and DTS:X decoding up to 9.1ch (using 2 extra power amplifiers) plus two phantom rear surround channels.
4K HDR compatibility (excluding front HDMI input) 6-in/2-out HDMI flexibility with HDCP 2.2 support
Optimized especially for custom in-home integration, and system configuration - Seamless IP Control integration with the leading control systems
Music connect allows integrators to combine the power of an ES-grade multichannel sound system with the flexibility of today’s wireless multi-zone music systems.
Web browser configurable set-up (programming)
IMAX enhanced for immersive sound and clarity
In the box: Calibration microphone, FM wire antenna, AM loop antenna, AC power cord, Remote control, R03 (size-AAA) batteries, Front cover