838 dynamic microphone specifications:
transducer principle: dynamic
frequency response: 40 - 17,000hz
pick-up pattern: cardioid
sensitivity (free field, no load at 1khz): 2mv/pa ± 3db
nominal impedance 350 ohms
minimum terminating impedance: 1 kohms
connector: xlr-3
weight: 11.64oz. (330g)
dimensions (diameter x length): 1.85" x 7.125" (47 x 181mm)