Here's the Mind & Muscle Magazine article on the AMP / HEAT stack.
If you haven't seen it. They discuss the most likely mechanisms and synergies of the ingredients in AMP and the reasons why HEAT works so well with it.
I was pretty skeptical (HEAT is Avant Labs own product after all)
AMP alone was pretty great for me
but when I did them together.. (I think I overdid it the first time. 4 AMP and 3 HEAT) I was in a state of euphoria for about 30 minutes. Just in a elevated mood. Somoene could have hit me with a bottle. Talk trash and I was in a good enough mood that I could turn the other cheek.
It felt downright illegal. Stronger than any mood elevation I've had on adderall in the past.
after the euphoria though it was crazy motivation/energy.
Only issue I've experienced though is that I have this issue of peaking.. every few hours I'll crash slightly then wake up again... When I combine the stack with adrafinil/modafinil that issue is alleviated.