The only picture that I see of the inside of your amp is when you did the inteview for the SF Audio Society. You show the proto amp and it shows a steel plate on top of the transformer (or is that non magnetic stainless steel?) and a bolt through the transformer. Are you still doing the same now? Turns out that even a NON MAGNETIC BRASS BOLT will also completely mess up the sound (I discovered this just about 5 years ago....I thought, like you its because its magnetic....turns out any CONDUCTIVE material does the same sonic degradation.....plastic bolts are fine).....and of course, a steel plate on top of the transformer. also completely messes with the sound....and it also sounds best to get the field away from your chassis.(whether aluminum or steel)....this is why you glue the transformer on top of wood. You can hear all this. So, if you can? measure extremely small voltage output difference or extermely small differences in heat.....please explain why you would hear this as a SIGNIFICANT difference in sound. You cannot....if you lowered the voltage of your power supply by one volt it would not change the sound of the amp (I am sure you will argue about this). The sonic difference in removing all the hardware and floating the transformer above the chassis is that the sound is more open, more airy....more dimensional...more pure. So, do you float your transformer in the air with no conductive material around it? Please, do some serious listening tests.....you will see this is way more complicated than "a magnetic bolt versus a non magnetic bolt".
Your rant about the power cord is complete poppycock. You have posted about this before in your defense of measurments. Of course, larger power cords have lower resistance....everyone knows that. However, ALL power cords using the same gauge sound different from each other and one brand of 14 guage cord might sound better than someone elses 12 gauge cord.....this is common knowledge......Is it your knowledge? Or do you think you just need a large power cord and be done with it. If all we needed is low impedance we would all have 4 gauge power cords. There are cable manufacturers that claim that the connector makes more sonic difference than the wire they use (very expensive wire). Can you measure the resistance difference between a home depot connector and a Furutech?.......maybe......and if you did measure a milliohm difference....is the one with lower resistance the best one sonically?
A few years ago I manufactured a dozen amps using highly modified IceEdge modules. One of the first AC mods I tried was to listen to various AC inlets. First I tried the $1 Shurter inlet that many serious companies use. Then I tried the same inlet but Cryoed by Take five audio in Canada....$2.49 each......it was noticeably better......then I tried the Furutech $28 inlet that was pure copper, gold plated, cryoed and demagnatized......sounded much better again. Then I tried the more expensive version of that connector that has the specail plastic and Rhodium plating......this thing was forward and zippy.....not musical to me. However, some say you have to burn them in for 400 hours to really hear them. I don't have that much patience.....he he. So, I sold the amps with the cheaper Furutech and everyone was happy. So, how do you measure the differnces in AC connectors that can give us a reliable way to buy connectors? You cannot. This game is so much more complicated than distortion measurements, heat measurements, voltage measurements, resistance, capacitance and inductance. This game is infinite.....and the only way you know anything about sound is to LISTEN.
Ralph would have us all buy 4 guage power cords and use whatever for line level (Mogami is fine, with him....a friend of mine started with Mogami and thought is was good...then he tried two others that BLEW away the Mogami). He has said over and over that balanced cables make no difference in sound. Even his customers hear otherwise. You have to listen to know....you have to listen to know.....and listen with an open mind.....an open mind.