Biasing an Alchemist Kraken ADP8A?

[St. Peter(sburg)]

Hello Everyone, I know these amps are pretty rare, but I ended up with two of them and am recapping 1 of them. I was hoping someone might know something about biasing them. Even if we do not know the voltage knowing where to measure it might help so that I can at least even them out side to side after the new caps go in, here is a link to the picture of the inside. Thanks

https://alchemisthifi.info/ranges/kraken/images/kraken_power_old_inside_1000.jpg