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I've been reading through the posts and learning a lot. Thank you all for sharing and helping!

I'm new to recording and I just set up my recording system to do voice overs and audio books. Here is the setup I'm working with:

  • Microphone: MXL 770 Cardioid Condenser Microphone

  • Channel Strip: DBX 286s Microphone Pre-amp Processor

  • USB Interface: Focusrite 2i2

  • Software: Adobe Audition CC

  • PC: i7-2670QM 2.20GHz, 8gb Ram, Win10Pro X64

My problem is I'm getting a constant (white noise) hissing in my headphones and comes through on my recordings. You can hear this hiss as soon as you turn up the gain instantly at the very lowest gain levels.

I've unplugged the laptop to run only on battery, but the hissing persists. (I read this tip on another post) I have also taken the channel strip out of the equation, connected the mic directly to the interface and the hiss is still there.

I also uninstalled the interface drivers, and re-installed. I was seeing online somewhere that the 2i2 had horrible drivers for win10.

Here's a sample I recorded of the hiss, you'll also notice that it changes pitches at times.

Any suggestions? Thank you for your time

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    If you turn the gain up too high you will always hear noise. The problem with your question is that there is no reference point i.e. nothing contained in the recording that gives an indication to what a normal sound might be like. Anyone can turn up the vol to get noise and that is normal. – Andy aka Oct 16 '15 at 11:11
  • All microphones have self noise. It's possible that the MXL 770 has more self noise than you would like or that you have a bad MXL 770. You could also have a very noisy room. – Todd Wilcox Oct 16 '15 at 12:34
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    Is it still present when you disconnect the mic also or if you try out with another mic? There are several reports with the interface being noisy - according to Focusrite you can damage the unit if you are disconnecting a microphone while leaving phantom power on (which is pretty bad design if that is true). gearslutz.com/board/… – Michael Hansen Buur Oct 16 '15 at 13:10
  • Ok that doesn't exactly sound like thermal noise. Do you hear the same noise when not recording - just using the low-latency monitoring on the 2i2? Also another recording showing how loud the noise is compared to a normal sound source would be helpful. You can just record yourself talking into the mic and then leave some silence after it. – Todd Wilcox Oct 16 '15 at 23:33
  • the crackling component of the noise sounds sort of like a processing error in the computer, if your DAW is trying to run a buffer size that's too low for your processing power, for example. – he_artburns Oct 17 '15 at 3:21

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