With a slim profile that never sacrifices performance for looks, the Marantz NR1509 AVR delivers 5.2 channels and high-resolution surround sound from Dolby TrueHD and DTS-HD Master Audio. With 6 HDMI inputs — including one on the front panel — the NR1509 is fully compatible with the latest 4K Ultra HD video specifications, including 60 Hz full rate content, 4:4:4 Pure Color sub-sampling, BT.2020, HDR and Dolby Vision. The NR1509 features a power amplifier section with high-current discrete transistors to support high-resolution audio. Enjoy your favorite music services via Bluetooth, Apple AirPlay or the HEOS app. Control NR1509 with your voice and Amazon Alexa — download the HEOS Home Entertainment skill and ask Alexa to play, pause or stop music, switch inputs for your different media players, turn up the volume and more.