I plan to build a Beta 22 and I read almost all the posts of internet on the subject. I saw that there are some conflicts about the number of board, number of power supply, real utility of the ground channel etc. I am especially referring to JCX and Nwavguy who gave real engineering materials to make their point. I know there are lots of post on this forum (and other) which treat about this subject but I would like to do a summary and a clarification of all the informations.
I know there were some (very rare) listening tests between 2 boards vs 3 boards configurations and that the 3 boards configuration usually sound better in those. I am not here to say that it is not true but I am the kind of man who attache importance to the engineering aspect. That is why I want to know more on it.
So if some people could talk about/compare the following configurations with only an engineering point of vue I would be really grateful:
2*B22 board + 1*S22 board
3*B22 board + 1*S22 board
4*B22 board + 1*S22 board
2*B22 board + 2*S22 board
4*B22 board + 2*S22 board
Moreover I would like to underline that the HeadAmp GS-X which is considered as one of the best headphone amplifier is composed of 4 boards and 2 power supplies.
And that the HeadAmp GS-1 which is still a high-end amplifier is a 2 boards + 1 power supply configuration.
Also if someone could detail the wiring/connection for a 2boards configuration and a 4pin headphone connector it would be nice.
Sorry for my poor English and thank you to everyone who had taken the time to read this.