About Clean 500500 Series preamp.Clean, clarity, low noise. SPECIFICATIONSCompatibilidade 500 Series Lunchbox CompatiblePower Consumption +/- 16 Volts DC / 70mA (max.)THD 0.003% to 0.2%Equivalent Input Noise -84dB @ 10dB, -80dB @ 30dB, -54dB @ Max. GainMic Gain 65dBHi-Z Gain 25dBPAD -20dBInput Impedance (MIC) 1k ΩInput Impedance (Hi-Z) 10k ΩOutput Impedance 600 ΩAudio Transformer (Turns Ratio) 350 ΩFrequency Response 5Hz to 22kHzControls Gain, Phantom Power 48V, Phase Reverse, Hi-Z (Front Input)Weight 355 gWarranty: 1 yearAudios