The 4038 from Coles is a studio ribbon microphone that was originally developed by the BBC as a broadcast microphone. Recognized for its wide, flat frequency response and high sensitivity, the 4038 quickly became a valuable tool in the recording studio as well as broadcast applications. The pressure gradient ribbon transducer is capable of withstanding high sound pressure levels without distortion and the bi-directional (figure 8) polar pattern provides a uniform pick up response at either side of the diaphragm. The bi-directional pattern proves valuable when capturing multiple singers, musical instruments, ambiance capturing and more. The smooth, rich sonic detail of the 4038 has made the microphone a classic among some of the recording industries most celebrated engineers.