Pro-Ject Audio - Phono Box DC - MM/MC Phono preamp with line output - Silver Input Impedence MM: 47k ohms / 120pf, Input Impedence MC: 100 ohms / 120pF Gain MM: 40dB / Gain MC: Noise MM: 86 dB/ Noise MC: 68 dB THD: MM 0.01% / THD: MC 0.05% RIAA EQ Curve Accuracy:: 20 Hz - 20 kHz / max 0.5 dB