Why do you claim your power and ground input terminals are 1/0 when even freshly stripped, regular ol' 1/0 is a fight? I absolutely abhor having to cut down wire that I just spent $4/ft for. Just make them oversized. How hard is that?
And stop using phillips heads for terminal screws. They are horrible. You can't tighten them down well and they strip much too easily. And even if you do use hex key, how hard is it to make them all the same size? The money spent on having to send two different wrenches would probably offset the money spent on the same size terminals. Everybody is using 8awg for speaker wire anyway.
I haven't used every amp on the market, but these are just a couple of the things that annoy me about the amps I have used. Which is plenty enough to make an observation.
What did I miss?