qdc Celebrates 10th Anniversary with 4Pro IEM Offering Switchable Modes for HiFi, Studio, and Live Performance

Celebrating a Decade of Innovation**: QDC unveils the '4Pro' IEM, marking their 10th anniversary, featuring advanced audio technology and precision engineering.

Versatile Audio Modes**: The 4Pro offers three sound profiles—HiFi, Studio, and Live—enabled by a single switch for tailored listening experiences.

Advanced Technical Specifications**: Equipped with a 4BA driver configuration, the frequency range spans 10Hz to 30kHz with an impedance of 10–23Ω.