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. Silk Dome Tweeters YU4’s 1-inch tweeters are made from silk to deliver a high-frequency range that is bright and refined. Their dome shape improves sound dispersion to ensure your ears capture every sound, regardless of where you are in the room. Unmatched connectivity Inspired by an equal appreciation for digital and analog, YU4 gives you the freedom to enjoy all your devices. Connect a turntable via a built-in phono preamp, transmit high fidelity audio from your computer or TV with Optical TOSLINK, or sit back and enjoy your newly curated playlist with Bluetooth 4.0. With five inputs and a subwoofer output, YU4 brings all your sound to life. Take control of your sound Packed with functionality, the YU series remote makes listening to audio more convenient. Quickly switch between sources, tune your sound to fit your space, and control playback while streaming via Bluetooth. Signal Detection Automatic standby and power-up mode conserves power when you’re away and continues playback when your music starts playing. Easy Charging Use the provided USB charging port to conveniently power your phone, smart home or casting device directly through your speakers.