So, after a few hours in my favorite combination of methylene chloride, acetone, toluene, benzene, and 2 other magic ingredients (basically miller-stephenson ms111 only way cheaper)
Warning kids: don't try this at home. highly flammable, highly toxic, low flash point... Let the professional morons do this
the eha5 discrete module in the process of giving up its secrets.
every single part of the eha5 is a massive pile of crap. it takes a whole room full of highly competent engineers to produce something this fucked up.
i did take the other module, hooked it up to a bench supply and hd800 headphones and got a good listen. wow is this bad.
proof that obviously the lowest distortion possible in amir's s/n test is the one and only measurement that they think matters.
the rest of the specs, not even close.
for those that don't know, the external power brick is a single 15v switching supply at 3 amps. internally it makes -15 from the +15. except for the fact that the -15 supply seems limited to about 750ma, and it runs 4 amps from this. So maybe if you are lucky you get about 175ma max current per amplifier. No way this is enough to drive those crap transformers.
transistors are 2L, G1 and the dual is k4r