USB Caps (Set of 4)

The AudioQuest USB-A Noise-Stopper Caps are designed to enhance the performance of your audio system by reducing unwanted noise and interference that can travel through unused USB-A ports. Often overlooked, open input or output connections on audio equipment, computers, or digital devices can act as antennas that invite airborne radio-frequency interference (RFI) and electromagnetic interference (EMI), which in turn can subtly but noticeably degrade audio clarity, imaging, and overall musical detail. By simply covering these unused USB-A ports with AudioQuest’s precisely engineered caps, you create an effective shield that blocks environmental noise from seeping into your signal path, allowing your system to operate in a cleaner, more stable environment. Constructed with high-quality materials and designed to fit snugly into standard USB-A jacks, these caps not only protect your gear from dust and contaminants but also contribute to lowering the noise floor, yielding a more refined and immersive listening experience. Whether you’re using them on a computer-based music server, DAC, or any audio component with USB-A connections, the AudioQuest Noise-Stopper Caps are a simple yet highly effective upgrade for anyone serious about squeezing the most performance out of their system.

Features