SE Electronics RNR1 Active Ribbon Studio Microphone - designed and built by Mr. Rupert Neve and SE Electronics. Electrodynamic pressure gradient with active electronics, 2.5 micron aluminium ribbon, figure-of-8 polar pattern, 20Hz-25kHz, -32dB sensitivity (referenced 1v/pa ±1dB), 15dB equivalent noise level (A weighted), 200ohm balanced output impedance, 1000ohm rated load impedance, >135dB maximum SPL, 3-pin male XLR connector (pin 2 hot), includes shockmount and flightcase.