JVC HA-XC90T True Wireless IEM

If there’s anywhere true-wireless earphones struggle, it’s on the low-end of the frequency spectrum. Bringing back the bass, JVC’s new HA-XC90T IEM—also known as simply “XX”—uses large dynamic drivers and an innovative acoustic design to punch well above its weight class. In the XX, JVC’s neodymium dynamic drivers measure 12 millimeters in diameter and sit within a dedicated chamber to eliminate distortion. Lining that chamber, specially shaped “tornado ducts” control the movement of the diaphragm to maximize bass presence and accuracy. Excess pressure exits through the vents in the XX’s IP55 waterproof and shockproof rubber shell. Signal strength and audio quality are optimized with Bluetooth 5.0 and support for the aptX codec, while 15-hour battery life makes the XX a great choice for long outings. Want even more bass? Turn on the dedicated Bass Boost button.