I think it is the pedal. I really think so.
The prototype left me with a... "ehhhh... okay... mayyybbbeeee it will." But the finished version - okay. This is a serious contender.
I'm all for the better pedal - whichever gets better tone, gets to be bought.
Already this has quite bit more versatility than the Openhaus. I suspect they will have their distinctiveness and I'm guessing the Openhaus will have a more fuzz-like characteristic but this Seventheaven also has a tinge of fuzz-like characteristics but that can be mostly taken away by running it on 18v.
I think this is a very very cool pedal - no tubescreamer tones but if you want jangle, grit, snarl, grind, punch, hugeness... I think it accomplishes it.
Oh, I think it burns most 'heavy metal' pedals too, just like the Openhaus did. Maybe better.