​I am setting up my first home studio for doing some personal singer/songwriter hobby-oriented stuff and recently received my first audio interface and serious mic in the mail. I'm having trouble and am trying to determine whether something is defective, so I can return it in time, or if the poor quality is just the way it is.

Does anyone have any experience with or know anything about the Sennheiser e900 series of dynamic mics? I've been able to find lots of into about the e800 series, but nothing about the 900 mics.