The SIMGOT SuperMix 4 IEM features a unique combination of four different driver types – 1 dynamic driver (DD), 1 balanced armature (BA) driver, 1 planar magnetic driver, and 1 piezoelectric (PZT) transducer. This sophisticated setup allows for precise control of sound across all frequencies. The dynamic driver uses a 10mm high-polymer diaphragm for deep, powerful bass, while the BA, planar, and PZT drivers work together to create a clear, balanced sound, delivering a captivating listening experience.