B-Stock, Warm Audio WA12 MK2 Mic Preamp, 1 channel mic pre; premium grade input and output usa cinemag transformers; 71db of gain - fully discrete signal path; discrete 6-pin socketed 1731 style opamp; tone button - switches the input impedance from 600 ohms to 150 ohms which changes the tone of both the mic and hi-z inputs; 2 meg Ohms true hi-z input on front panel sends instrument signal through entire circuit including both cinemag transformers and the discrete opamp - great for guitars, bass, keyboards and other instruments that have a 6,3 mm output jack; mic level balanced input: xlr; balanced outputs: xlr and 6,3 mm trs; 48 volt phantom power; output attenuation control (after the cinemag output transformer) allows for driving the preamp and transformers into saturation; led meter gain indication; 20db pad; interneal power supply, B-Stock with full warranty, may have traces of use.