Amazon.com: Rupert Neve Designs RNDI 1-Channel Active Instrument。Rupert Neve Designs RNDI-M Active Transformer Direct Interface。Rupert Neve Designs RNDI-M Active Transformer Direct Interface。Rupert Neve RNDI | MicRentals.com。複数台所有しているうちの1台になります仕様Noise：Measured Output, un-weighted, 22Hz-22kHz, source impedance 150 Ohms to 10K OhmsBetter than -110dBVInput Impedance：Instrument Setting: 2.2 Meg OhmSpeaker Setting: 200k OhmOutput Impedance：Less than 40 OhmsFrequency Response：+/- 0.25dB from 25Hz 44kHz+/- 1dB from 12.5Hz 63kHz-3dBu @ 92kHzMaximum Input Level：Instrument = +21dBu Typical Speaker = +41.5dBu, 92 Vrms (266Vp-p)Maximum Output Level：+11.5dBu output at maximum input levelTotal Harmonic Distortion plus Noise：@ 1kHz, +20dBu input level:0.25% Typical (2nd and 3rd harmonic)@ 1kHz, -20dBu input level :0.015% Typical (2nd and 3rd harmonic)@ 20Hz, -20dBu input level :0.75% Typical (2nd and 3rd harmonic)Power Requirements：Phantom power, 4.5mA @ +48VDC