• Technically-advanced large diaphragm tensioned specifically to provide smooth, natural sonic characteristics
• Externally polarized (DC bias) true condenser design
• Exceptionally low noise, wide dynamic range and high-SPL capability for greatest versatility
• Transformerless circuitry virtually eliminates low-frequency distortion and provides superior correlation of high-speed transients
• Precision-machined, nickel-plated brass, acoustic element baffle provides enhanced element stability and optimal sensitivity
• Open acoustical environment of the symmetrical housing assembly minimizes unwanted internal reflections
• State-of-the-art surface-mount electronics ensure compliance with A-T's stringent consistency and reliability standards
• Switchable 80 Hz hi-pass filter and 10 dB pad
• Includes AT8449 shock mount

AT4040 Specifications Element   Dynamic Range (Typical)   Condenser
  133 dB, 1 kHz at Max. SPL
Polar Pattern Phantom Power Requirements   Cardioid
  48V
Frequency Response Switches   20 - 20,000 Hz
  10 dB pad; roll-off
Open Circuit Sensitivity Low Frequency Roll-off   -32 dB (25.1 mV), ±2 dB re 1V at 1 Pa
  80 Hz, 12 dB per octave
Impedance Weight   100 ohms
  12.7 oz (360 g)
Maximum Input Sound Level Output Connector   145 dB SPL, 1 kHz at 1% T.H.D.
  XLRM-type
Signal to Noise Ratio     82 dB, 1 kHz at 1 Pa