I don't post much here, because I can't find time to spend on a regular basis...but did want to jump in and see if I can answer a few questions.
1. The Golden Ear chip (our name, btw) is the same chip as used in the very high-end recording consoles, such as the Neve and Harris units. More than a decade ago, I had the chance to speak with Rupert Neve, and he said that one of his big secrets was the chip he used. It's more expensive than the chips normally used (about 7 times as much) and is incredibly warm. (I'm a tube junkie, so for me to say "warm" and "solid state" in one sentence is pretty unsual).
2. The front end is *based* on the Time Traveler design (330, 390, 305), but does things a bit differently because we could'nt fit ALL of the features in the mini amp. We talked to a LOT of users, and incorporated the things that everyone really wanted, and left out a thing or two that ended up on the bottom of the list.
3. Yes, we prefer to do things "the Eden way". <smile> Which is why we waiting until David was happy with a light-weight power section. BTW, ours is a very unique analog switching amplifier, not a class D. David feels (and I agree) that it is more musical, more dynamic, than Class D designs. It's also the reason we haven't released our neo cabs yet. David wants to offer a cab that still has all (or most) of the oomph and tone of a standard cab... and wants to offer a speaker with a reasonable life span... that will perform to spec for more than a few years.
I'm am loathe to discuss the finer points of engineering... preferring to spend that time practicing... so I leave all the engineering to the David Brothers (David N. and David G., our pet rocket scientist). All I know is that I've never been disappointed...
Oh! And the WTX should be shipping by the end of the month.
Hope this helps...