High-End MM/MC Tube phono preamplifier. MM/MC switches on rear panell. Unique continuously variable input impedance loading. Gain adjustment 40/50/60 dB. Capacitive adjustment 100/200 pF. Capacitance switch for MM cartridges. Switchable subsonic filter. Dual mono tube triode architeture. Premium ECC-803 Golden Pin Tubes. Ultra low-noise semiconductors. SMD technology