The problem with and SM 57 is that being a moving coil mic the output is very low, but no phantom power is required. With a good low noise mic pre the results can be excellent, unfortunately good mic pre's cost. Condenser / electret types are higher output but can be more limited on dynamic range, EQ'ing may be required for the best result. Remember that quality (and some cheaper) condenser mics require a power source. Some use a small battery in the mic handle, some require full 48v phantom power. A mic pre delivering 48v phantom is always useful. And 48v will give a much better headroom for loud sounds! Note that the SM 57 is insensitive to 48v powering so can be used with a mic pre delivering 48v without damage, although it is better to operate it without if you have that option. Unfortunately 'cheap' solutions usually give cheap results, so buy the best you can afford and a bit more! best wishes, D.
