The Pioneer VSX-523-K 5.1-Channel AV Receiver features Direct Energy amplification with up to 140W per channel. It's equipped with Dolby and DTS high-definition surround sound decoding, as well as an on-screen display. The receiver features four HDMI inputs and one HDMI output that support 4K and 3D pass-through, Audio Return Channel (ARC), Deep Color (36-bit) and x.v. Color. Plus, there are multiple advanced surround modes and an AM/FM tuner with 30 station presets.
The receiver also features multiple analog audio and video inputs, a coaxial audio input and an optical audio input. There is a front panel USB port as well, which you can use to connect your iPod, iPhone, iPad or USB drive. The USB port supports direct digital connection and it will even charge your device. Other features include multiple Pioneer sound enhancements and Pioneer Auto MCACC Room Calibration, which includes a setup mic so you can perfectly calibrate your system to your specific room dimensions.