You can talk to Amazon Alexa on your JVC receiver. With Alexa built-in, you can ask to play music, place calls, listen to audiobooks, hear the news, check the weather, control smart home devices, get directions, find parking, and more - all while you keep your hands on the wheel and eyes on the road. K2 is a JVC original technology that reproduces the original master sound by expanding the frequency range. For example, K2 will expand the digital data of the audio CD recorded at 44.1 kHz/16 bit to 96 kHz/24 bit. It is also possible to recreate the high-frequency range above 20 kHz that is cut during the CD formatting.