Specifications STM series
| Element : | Omni directional | Cardioid | Super cardioid |
| Frequency range | 30Hz. – 20 KHz. | 30Hz. – 20 KHz. | 30Hz. – 20 KHz. |
| Free-field Sensitivity at 1KHz | 10 +/- 2mV/Pa ** | 14 +/- 2mV/Pa ** | 16 +/- 2mV/Pa** |
| A weighted equivalent SPL level due to inherent noise | 20 dB | 17 dB | >16 dB |
| Max. SPL for 0,5% 1KHz (PS 48 +/-4V) | 135 dB | 132 dB | 131 dB |
| Output impedance at 1KHz | < 100 Ohm | < 100 Ohm | < 100 Ohm |
| Phantom power | 12-52 V | 12-52 V | 12-52 V |