| Element | Back Electret Condense 4rmm |
| Electret Specification | Φ |
| Polar Pattern | Omni |
| Frequency Response | 40Hz-23KHz (±1dB) 40Hz-25KHz (±2dB) 40Hz-30KHz (±3dB) 30Hz-30KHz (±6dB) 20Hz-30KHz (±10dB) |
| Sensitivity | -39.5dB±3dB (1dB=1V/Pa at 1kHz) |
| Output Impedance | 600Ω±20% (at 1kHz) |
| Max.Input SPL | 132dB±2dB(T.H.D ≤1% at 1kHz) |
| Equivalent Base Noise | 28dBA |
| Power Requirements | 48V (48V DC) 2mA |
| Output Interface | XLRM |
| Weight | 93g |
| Dimensions | Φ 20 x 125mm |