The XBA-40 In Ear Monitors by Sony feature Quad Balanced Armature drivers that deliver crystal clear audio. The drivers sit within a dual layered housing that reduces unwanted resonance and distortion for enhanced clarity. A low impedance allows them to be easily driven by portable devices.
Driver unit: Quad Balanced Armature
Sensitivity: 108dB / mW
Frequency Response: 3Hz-28,000Hz
Impedance: 8 ohms (at 1kHz)
Maximum input: 100mW (IEC)
Cord: About 1.2m
Plug: 3.5mm Gold-plated L-type stereo mini plug