Just bumped into this thread and video a few days ago. I have the HD500 for almost four years now and it never got under my skin. First I used it on my Laney IRT120H, and last September I bought the Marshall JVM410H Joe Satriani signature. But with this video and settings... What can I say... Thanks man! Now the amp really SINGS! It was already incredible, but now it makes jaws drop to the floor. I wish Line 6 took the effort to learn us those things. Not everyone of us has the time to figure these things out, so again: thanks for posting this. It was VERY helpful! Nic