I got my Pod Go a couple of weeks ago and was struggling with it a bit. What I found was that pretty much all of the stock profiles sounded like they've been set up for distortion and tons of bass. I even had similar experiences with profiles I download from other sources. I'm using a PRS CE 24.
After hooking everything up again this morning, to try a suggestion from someone on Reddit to adjust input impedance, I was shocked to find that everything sounded great. The strange thing was that I hadn't yet changed any settings. I went looking for an impedance setting, what I found instead was a 'Guitar Input Pad' option which was OFF and didn't make a huge difference changing it to ON. I couldn't understand why everything sounded so much better, but then I realized there was one thing I did differently from previous times. I plugged in my guitar BEFORE turning on the Pod Go. I laughed it off at first, since that couldn't possibly be what made a difference. So I powered everything off, unplugged my guitar, powered it back on and then plugged in my guitar. There it was. The overblown signal I was hearing before.
Is this something that's to be expected with the Pod Go? It's not a huge issue if the guitar needs to be plugged in first, but I don't see that documented anywhere. I'm guessing the Go is auto sensing impedance on boot and not specifically when a guitar is connected, which is causing the signal to be significantly boosted.