Forget cables as snakeoil. There's a new snake King in town.

Words that come out of any person's mouth do not change reality. They're just words.

I will quote Ryan to avoid any out of context statements. And to also let the people here think for themselves. 

"No, that’s not what I said and no, the better the amp, not the better th system. You get an amp when you need an amp. They are not magic like you seem to think they are. You’re on a forum for objective and scientific approaches into AV and you seem to be on the side of voodoo.

An amp is needed when it’s needed. An AVR has a finite amount of power. If you need more than that because of spl, distance, sensiivity etc then yes an amp would help. If not, internal amps in AVR have gotten good enough that you are not gaining anything.

Unless you have VERY sensitive speakers, 100dB plus, you will not even hear the noise floor difference. The reason most people think they make a difference is because most dedicated amps have an increased output gain, thus increasing spl when it receives the same input voltage from the AVR/pre. People, like yourself it seems, have a bad tendency of mistaking an increase in spl for an increase in clarity.

There are other reasons, but I’ll keep it simple fo now. If you would like to put your ears tot the test, we will be doing blind comparisons such as amp vs AVR tests at Mwave in 2026. Come out and prove us all wrong!"

Buckeye amps look like decent cases with off the shelf hypex and Ncore modules.  Nothing that looks groundbreaking or revolutionary.