6 Knowles balanced armatures, DLP 3D printing, 80.6mm ultra-long sound tube, 4-electronic crossover, 3 sound adjustment switches, 8-strand monocrystalline silver-plated copper cable. Specifications: *Impedance: 16~32 Ohms @ 1KHz *Sensitivity: 110~113dB @ 1mW *Frequency Response...