From the manufacturer
Superior performance, unerring dependability and sonic consistency make the 40 Series line of studio microphones the first choice of countless award-winning producers, engineers and musicians. Every 40 Series microphone is individually tested and inspected for 100% quality assurance.
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
State of the art surface mount electronics ensure compliance with A T’s stringent consistency and reliability standards