With a recent eBay coupon, I purchased a set of GG Amphibians for my Equinox. They arrived on Saturday, and I tried them out yesterday at a tot lot. I could barely hear them! Turning up the volume on the Nox and the headphones gave me enough muddy audio that I could hunt, but there's no way that this set-up is going to work for water detecting. Does anyone have any suggestions for the best way to figure out if it's the Nox that's the problem, or if it's the headphones? I was thinking I could plug the headphones into something (looks like a fairly standard 1/8" jack), but I don't think I have anything with enough power output to make them sound "normal". Can I plug a regular set of headphones into the Nox jack, and try that?