Here is my current recording setup. I run a mic and a guitar line into an Alesis Multimix 6 mixer and from there, a USB goes into a Sound Blaster Recon 3D Fatal1ty sound card. I am using Audacity to record. My problem is that whenever I record, the sound quality is very poor and very low. Whenever I turn up the volume either on the PC itself or on the mixer, I get fairly bad distortion and feedback. Is there any way to improve this sound quality? I am running Windows 7.
I have read that a pre-amp could help, but I would like to refrain from buying any more stuff. Are there any other devices or tips that could improve my sound quality? I also read that the signal in the USB cable could feedback to the mixer causing the distortion/feedback. I don't believe it's the sound-card or Audacity because I tried using the microphone that came with the soundcard and I got better sound quality than with the mixer. The only reason why I want to use the mixer is because I want to be able to control the guitar and the microphone levels separately. Oh, and I am using a Taylor 214ce guitar and a Shure SM58 microphone.