The Audio-Technica PRO45W is a cardioid condenser hanging microphone that is designed for a variety of professional sound reinforcement and recording applications. It is known for its wide frequency response, high SPL handling, and unobtrusive appearance.

The PRO45W features a wide-range condenser element with a low-mass diaphragm for superior performance. It has a flat, smooth frequency response of 20 Hz to 20 kHz, which allows it to capture a wide range of sound sources with accuracy and clarity. The microphone also has a high SPL handling of 134 dB, which means that it can handle very loud sounds without distortion.

The PRO45W is housed in a rugged metal housing and features a cardioid polar pattern, which means that it picks up sound from the front and rejects sound from the sides and rear. This helps to reduce feedback and ambient noise.