I don't really know how to describe it but it's sort of a popping/smacking sound when i try to use upstrokes on power chords. It's not from my amp either because it happens when i'm unplugged. so... does anyone have any suggestions on what it is im doing wrong and how I can fix it?
I would imagine you are picking far too hard. Strum the strings with a light, smooth motion. Make sure your arms are totally relaxed. Tell me if you have any problems after trying this.
You're upstroke is actually pulling the strings away from the fretboard and snapping them back. Be gentler and more precise.