Audix TM-1 - test and measurement microphone for RTA and room analysis software systems, frequency response: 20Hz-25kHz (+/-2dB), 200ohm impedance, 140dB maximum SPL, nickel housing, requires 18-52V phantom power. Includes clamp, small windscreen (WS1218) and bag (P-1). Optional large windscreen (TM-1-WS) available. Length: 150mm