Agree with every point that you made. However only so much can be accomplished for a given price target. I have no doubt that your 300b is superior in numerous ways, but no way could it sell for only1500.00 USD either.
You unavoidably pay a cost to have better parts, transfomers, stout driver stage and power supply. I suspect that the Willsenton R300 is a very good introduction to a 300b SET amplifier at an inviting price. You can probably do much worst for1500.00 So I believe it is a very good value proposition. Those willing or able to spend more can step toward your 300b effort.
Charles
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