grandfather recently died and i ended up with some old school top of the line home audio gear. really stoked about a sweet sounding pair of b&w speakers, a 50lb. yamaha turntable and mostly about a "mac 1900" stereo receiver. haven't had much chance to look into the specs on the 1900 but it's solid state with tubes... anyway, i'm wondering if i can use this as a preamp of sorts? i'm pretty ignorant about signal levels and am afraid to blow it or my mics but just plugging stuff in and seeing what happens. can anyone give me some direction on doing this? thanks in advance.