So you see how you laid out the reality of the issues that exist (sure you don't know the specificity of the PRECISE problems your SPECIFIC approach in design might have) but you have the basic understanding of where problems can form generally speaking. Does this mean everyone else aside from a few electrical engineering specialists simply don't even understand these seemingly basic front-facing realities? Or, is it simply a case of trying to address them while figuring out where good power supplies will be sourced from (since I assume you aren't designing power supplies as well?), and while keeping the design within reasonable cost - are these the actual barriers that prevent power amps materializing in the market that would challenge the Benchmark? Or is it the prior case where people just aren't verifying their designs, or simply can't figure out what parts to use or discrete implementations to undertake within budgetary constraints?
I just have a hard time trying to make sense of the reality - that even at prices higher than the ABH2, no one can match it's performance after all these years.. I recall the days you spoke about THX's feedforward error-correction approach was nothing too serious, or nothing that others themselves wouldn't be able to emulate with ease, it's just no one bothered to think about doing it for whatever reason. Now we see a few others I think like Schiit have shown, it's not really a problem if you just commit to designing your own (the Heresy I believe does it). And I think your A90 jewel of an amp also backs up your earlier sentiments that THX's performance isn't something special once the basic idea of their approach was adopted by other designers who -if serious enough- could best the THX approach (which you seemingly have plowed through, and put your money where your mouth was all those months ago).
My guess is companies simply don't care enough, as evidenced by consumers who possibly don't care enough, seeing as how passive speaker purchases are done by people too rich to even know what they're buying (and just buy whatever is presented best to them by salesmen), or simply older people (seeing as how younger folks don't buy speakers much, and if they do, they're powered versions). So to me I don't want to think anyone is actually incompitent to the degree I would have initially thought. I would more place my guess as to the lack of true performance power-amps is simply due to economic disinterest. And it being a more demanding and laborious process than designing headphone amps that sell easier/more numerously?
