The legendary U12t has been refreshed for 2025 with a new cosmetic design and upgraded accessory package. The U12t's industrial design has been updated with beautiful silver earpieces and an electroformed stainless steel faceplate chip with chamfered bezels. The U12t package now includes 3.5mm and 4.4mm silver cables, and all Apex modules offered to date: MX, M12, M15 and M20.

The U12t is 64 Audio's bass and vocal tuned offering, offering 4 drivers focusing on the bass frequencies, 6 drivers focusing on the midrange, 1 driver focusing on the mid-high frequencies and 1 Tia driver focusing on the highs. The 12 drivers are secured in an ergonomic aluminium shell. The inlaid brushed faceplate finishes off the design with flair. The U12 also features Apex technology, which relieves air pressure created by speakers in an enclosed environment.

The U12t offers a linear sound with a mild emphasis on bass and treble to provide a clear reference sound. The earphones are detailed and exhibit crisp highs, yet emphasize powerful bass and smooth, intimate vocal presence. The emphasis on the upper vocal air and bass gives the sound of U12t a clear, technical and punchy sound.