16 ANGLE - Get the most out of your speakers by tilting them toward your ears, ensuring you never miss out on those higher frequencies ^^ MOUNTING HOLE - Secure YU4 or other compatible speakers in place with the provided 1/4-20 screw ^^ FOAM PADDING - Maintain stability and reduce undesirable resonance ^^ MINIMALISTIC DESIGN - S4s low-profile design keeps your desktop looking clean ^^ SOLID METAL - S4 is available in a variety of metals, making them extremely durable and resistant to vibration