I know that tube mics don't need phantom power because it has it's own power supply, but what will I need if I want to record straight from mic into computer?

Why does my genesis sound so sh*tty? It's really quiet, and things sound very thin and wispy. I'm pretty unhappy, especially after spending about $500 on one. Any tips? Does this mic just suck? Is it a lemon? Does the tube need more time? Any advice would be awesome.

:confused: