@holmz I'm sorry, I don't understand your post. You're talking about an engineering concept. What are the consequences? Should the A07 and Tripath amp sound very similar?
If you need more power, like maybe driving a 8 ohm load… then to get more power one uses a higher input voltage.
There is a yellow and blue table here:
Figure out what power you want/need, and order the power supply that fulfills that need/want.
I do not think it is the best amp in the world, and comparing it to a Bryson, Parasound, Pass, etc. seems a bit of a wank.
But it is the best amp at $62 (USD) IMO.