Has anyone else experienced bad audio on all recordings? I'm hearing a loud repetitive sound no matter the gain nor sample rate. It is a constant repetitive thud/static/propeller/synthesizer modulation sound. Audio is being recorded, but the electronic synth sound drowns out quite a bit of it. I'm assuming either a bad part or a mistake in the soldering? Does anyone have suggestions on how to fix it? I have included an audio sample below...