The HiBy x FAudio Project ACE In-Ear Monitors (IEMs) are a collaboration between HiBy, a leader in high-fidelity audio players, and FAudio, a respected manufacturer of audiophile earphones. These In Ear Monitor pack a punch with a 12mm Large Dynamic Driver Unit, giving you rich, detailed sound. The Magnesium and Lithium Alloy Dome and Beryllium-Plated Diaphragm ensure clear, natural audio. Plus, thanks to the TBAC Triple Acoustic Chamber design, you'll enjoy a wide soundstage and crisp instrument separation. With a Coaxial Balanced Shielding Cable and 4Pin-lock Adapter included, you can count on reliable connections and adaptability for any setup.