Capture detailed vocal, instrument and ambient recordings with the AT4040 large-diaphragm cardioid condenser microphone. Its fixed cardioid pickup pattern emphasizes sound arriving at the front of the capsule while reducing pickup from the rear, helping isolate a vocalist, acoustic guitar, amplifier cabinet or single instrument in a treated recording space. The 20 Hz to 20 kHz frequency response covers low-frequency fundamentals through upper-frequency detail, while 12 dB self-noise supports quieter sources and more open gain settings. The microphone requires 48 V phantom power and connects through a balanced 3-pin XLR output. A switchable 80 Hz high-pass filter can reduce low-frequency rumble, stand vibration and proximity buildup before the signal reaches the preamp. Engage the 20 dB pad when recording louder material such as close guitar cabinets, percussion or brass; maximum SPL handling increases from 145 dB to 155 dB with the pad enabled. SSA165105-P20 includes the AT4040 microphone and a shock mount for decoupling the body from stand-borne vibration. The side-address form factor suits conventional studio boom arms and microphone stands. A 100 ohm output impedance supports connection to standard microphone preamps and recording interfaces, while the 133 dB dynamic range provides useful headroom between the noise floor and high-level source material.