True Systems P-Solo Ribbon Mic Preamp Gain (microphone) : +15.5 to +70dB or +6dB (INP ATTEN mode) Gain (direct input) :-4 to +50dB or -14dB (INP ATTEN mode) Maximum Input Level : +25 dBu (+25 dBu in INP ATTEN mode) Input Impedance (direct input) : 2.5 Mohms Input Impedance (microphone) : 10 Kohms