iFi Micro iPhono MM/MC Phono Preamplifier A compact phono preamplifier with Ultra high end features and performance Patented TubeState Class A Tri-Brid Amplification Circuit developed by AMR (Abbingdon Music Research) for a natural real sound Dedicated Low-Noise MC Input (suitable for cartridges &lt;0.3mV) with 60-66dB of Gain and Ultra-Wide MC Load Options 22 Ohm-47K Ohm with 8 setting options Dedicated High Quality MM Input (also suitable for MC Cartridges &gt; 1mV) with 40-46dB of Gain with Ultra-Wide MM Load Options from 100-500pF in 5 setting options 6 Stereo EQ Curves available via a front panel toggle (RIAA/eRIAA/IEC/eRIAA+IEC/Decca/Columbia) allowing playback of all Stereo Recordings with correct playback equalization