The Audio-Technica AT4051A Microphone is a small diaphragm, transformerless studio microphone designed for voice and instrument recording as well as sound reinforcement. The microphone features a cardioid polar pattern which effectively minimizes off-axis pick up resulting in focused and accurate sound reproduction. The microphone is modular and consists of 2 modular assemblies which are threaded together. The The AT4051A handles sound pressure levels (SPL) up to 143dB at no greater than 1% THD, a suitable solution for percussion and drums as well as brass and other sources high in volume. The microphone features a frequency response of 20Hz to 20kHz with a low cut roll-off switch, eliminating low end noise and "popping" below 80Hz.
| Transducer | Cardioid Capacitor |
| Polar Pattern | Cardioid |
| Frequency Response | 20 Hz - 20 kHz |
| Dynamic Range (Typical) | 127 dB, (1 kHz at Maximum SPL) |
| Signal-to-Noise Ratio | 75 dB, (1 kHz at 1 Pa) |
| Maximum Input Sound Level | 146 dB SPL, (1 kHz at 1% T.H.D.) |
| Power Requirements | Phantom, 48v (±4v) |
| Output Impedance | 100 Ohms |
| Output Connectors | XLR-3M Type |
| Pad | Yes, 10 dB Pad; Roll-Off |
| Low Frequency Roll-Off | Yes, 80 Hz, (12 dB per Octave) |
| Dimensions | 6.10 x .83" (155 x 21mm) LxDdiameter |
| Weight | 4.2 oz (120 g) |