Effortlessly fill your room with rich, spacious sound. Featuring carefully designed 4-inch Kevlar drivers and 1-inch silk dome tweeters, YU4 faithfully reproduces your favorite tunes, letting you enjoy them to their fullest. Throw on your latest vinyl with a built-in phono preamp, or sit back and stream your carefully curated playlist via Bluetooth 4.0 with Qualcomm aptX. Crystal-clear, detailed sound for all to enjoy.