REMARKABLE SOUND Enclosed in handcrafted MDF cabinets measuring 8.7' tall, YU4s 1 silk dome tweeters and 4 Kevlar drivers deliver crisp highs and wonderfully balanced mid-range, faithfully reproducing all your favorite tunes EASY STREAMING Built-in Bluetooth with Qualcomm aptX technology lets you enjoy high-quality streaming from the palm of your hand VINYL-READY Equipped with an integrated phono preamp, YU4 can be easily connected to any vintage or modern day turntable SP9: Capture every frequency your speakers have to offer by bringing them closer to ear-level. Each top plate also provides up to 30° of rotation ensuring your speakers are always directed towards you SP9: Surface vibrations caused by your speakers can result in muddy sound. SP desktop speaker stands prevent this by utilizing heavy steel and closed cell foam padding to absorb as much resonance as possible