Bring it on. I'm an electrical engineer that has designed electronic music synthesizers, Industrial Automation Instrumentation, Analog and Digital Comunications Systems and have been in some of the finest recording studios in New York. Many of my designs were tested and certified in laboratories, even the NBS in the USA or others around the world. I've been around the block, several times.
Ok I'm back from the dead.
If you really are an EE you should be ashamed of your post and for the record just because you're one doesn't mean you have the know it all of these sort of circuits/design but I'm not saying that I have also.
Back to my previous post I asked what design flaws do the amps exhibit, you have not stated one related technical thing about it other than go into non-sense about why P2P wiring is bad, reading specs regurgitating off Schiits website or what Jason and others have posted before on this forum and something along these lines about soundstaging and greater voltage swing is BETTER.
If you said the amp exhibits flaws with it's design what sort of flaws? I expect something along the lines of for e.g bad/incorrect CCS implementation, clusterfk output stage toplogies, incorrect direct coupled or capacitor load ends, no circuit ground or regulated heater/filament supply etc. You should not be afraid to go into detail after posts like those encourage feedback and revision (better yet when the designer see's it).
Another thing is you failed to address properly is a great voltage swing doesn't mean better proper engineers that have been in the field for a long time i.e Pass don't follow the rule of MOAR IS BETTER or BIGGER IS BETTER (not to the extent most clueless people on head-fi describe it as), you can have a badly designed gainclone (Darkstar) that have a greater voltage swing than a well designed and executed amp but sound like complete arse or in other words can be greatly improved on it literally puts the design or manufacturer to shame of the current revision.
Another thing you talked about which I find is complete bs but hey it's just me is P2P wiring. If tube amp designed with simplicity in mind, very low count of parts running along B+ around 250-400vdc minimum with no solid state front end or similar parts used, it makes complete sense for it to use P2P wiring rather PCB, off the shelf retail high end amplifiers are not for you to service or poke around, of course I agree with you PCB does provide a more error free or cleaner approach but for circuits that operate on high B+ or use a lot more current and especially where internal heat becomes a problem where parts are more prone to wearing out easily, P2P wiring provides the fastest and least messiest approach should troubleshooting or servicing is somewhat "regularly" required. Maybe all those 50/60/70's expert engineer circuit designers are talking smack when they said P2P wiring is good for these particular uses, to see my point in the works look at guitar tube amps and some of those fancy high-end tube amp manufacturers these days. Some have reported that P2P wiring is even better for high current designs because there almost zero crosstalk compared to the closely spaced traces on them PCB's and that it sounds better than populated PCB equivalents.
Lastly and I may have missed out something else as I'm typing this in a rush to get my point out is ok since you're comparing the Crack vs the Valhalla, regardless of which is badly designed both have one thing in common is it uses tubes true but two different approach at the same problem and that is driving headphone loads. Maybe the Crack has really bad and highly distorted measurement if put on the O-scope that Doc is afraid of posting, maybe it measures superbly that I don't know but seriously you're comparing two different designs, yes the Valhalla can drive low-z phones as well but if we put subjective into the context I can tell you here and right now and I know there a lot of others out there that the Crack does a better job driving mildly high z phones such as the 600/650 and even the 800 better then Valhalla.
I don't stick up behind my favourite manufacturer (non really other than diy) and shill them but if you really think the Crack is that bad and flawed as per se you've mentioned in the previous pages, I encourage you greatly to start a contributing thread here or personally with Doc B and address them with him because as far as I see it Doc B has brought amps to the table (budget diy mind you) and you have not. If you can bring a diy kit that not only sounds better than the Crack but similar price range to the masses and have intelligence praise it than I'll take back what I've said.
Just to add as quick edit:
Here's a quote of the day on a similar topic on another site but it pretty much covers what I've been trying to get my point across as:
"All amplifiers and amplifier topologies are compromises. The design engineer balances one thing against another."