Very true; the project that gets built is more beautifull and sounds better than the perfect amp that doesn't. I fully appreciate what you're saying; but let me shplain a little. I have lots of projects going; I just finished my tube rec. EL 84 amp and re-built my Eico ST 40 which I happen to love the sound of. So you know I am not just pulling the chain here. But I decided on the 6Ah4 just as an example of a SE amp so I could use that as a platform for attempting to understand proper design and parts use. So just to get it built would'nt really do that for me. I know it is not going to be a slam dunk amp; if it helps me to understand some things then it did it's job. You know you and Damir and Doug do good work here as I am sure you all could migrate over to the Joelist or some other forum where they know their shit and it would probably be a lot more interesting for you all. So as a heads up; this beginners stuff is a lot of help to ....me at least; I don't know if others use it. But here's my thanks. You have brought up a good point regarding why most amps look alike. I have wondered and asked that in the past. What is the point of all this deep thinking then if the work has already been done?