Marantz Pro M4U – professional over-ear DJ headphones

Specifications: Type: Electret condenser Polar Pattern: Cardioid Frequency Response: 70 Hz - 16 kHz Sensitivity: -38 dB ± 3 dB (0 dB + 1 V/Pa @ 1 kHz) Output Impedance: 150 Ω ± 30% (@ 1 kHz) Load Impedance: ≥ 1000 Ω Self Noise: 18 dB A Max SPL: 136 dB (@ 1 KHZ ≤ 1 % T.H.D.) S/N Ratio: 76 dB Weight: 0.56 lb (252g) microphone only Dimensions: 1.89” diameter x 7.28” (48 x 185mm) microphone only