Are there any well-established tonal differences between playing off of AA batteries versus the wall adapter? I have a set of (8, I think?) Eneloop AA's in there - it actually holds battery life pretty well just for jamming around the house. The result is that I rarely bother to plug the thing in, just because if I'm going portable, I want to be REALLY portable. I remember something about audio quality being poor if you tried to turn it up past a certain volume, but I can't remember if that was something they addressed with firmware or not... Because I'm dumb, however, I now seem to have a THR10, Blackstar IDCore10 V2, Blackstar Fly3, and BOSS Katana Mini. The Katana Mini is the newest of the bunch, and also the one that gets the most use. Both the Fly3 and Katana Mini are good enough at what they do, that I really question if I need to keep around both the THR10 and the IDCore10 anymore. The THR10 has stuck around, in part, because of its versatility. I've plugged synths and other audio equipment into it around the house almost as much as guitars. But I need to move some gear out, and don't want to regret selling the THR10, which is legitimately cool piece of gear, but one that's gotten less of my time lately.