Audio Technica AT4040 cardioid externally polarized (DC bias) true condenser, state-of-the-art surface-mount electronics microphone provides A-T’s stringent consistency and improved isolation of desired sound source at low noise. Its technically advanced large diaphragm tensioned and high-SPL capability ensures less noise and smooth & natural sound with great versatility. Moreover, it is well equipped with a custom shock mount, nickel-plated brass & acoustic element baffle, and switchable 80 Hz high-pass filter, and a 10 dB pad for technical precision and artistic inspiration with enhanced element stability and optimal sensitivity. Transformerless circuitry virtually of this device provides superior correlation of high-speed transients and less frequency distortion. It reduces unwanted internal reflections in an open acoustical environment of the symmetrical housing assembly.