Transducer type:  5 precision balanced armature SPD duplex driver 
Transducer configuration: 6-low, 6-mid, 6-high
Quad Bore Design
Integrated 8-way emulated passive crossover
Hypoallergenic, hard acrylic shells
Impedance: 22 Ohms Sensitivity: +/- 115dB SPL @ 1mW
Freq. Response: 10Hz – 20 kHz
Noise Isolation: -18dB with RKTECH™ Auto Module