high fidelity

Hi, i'm new in those things, this circuit would work well for converting balanced or unbalanced audio from condenser mics to a fully differential balanced signal? the balanced output is meant to be plugged to a mixer or interface TRS input. the 20uF caps are solid polymer ones on anode to anode...

(Continuing from a discussion in another thread that went off topic.) My perspective is that what qualifies as "high fidelity" is subjective. Others disagree. Assuming that there are objective measurement results that qualify a component/system as being high fidelity, what are the threshold...