S1 & S2 is understandable, but the power issue still escapes me. The only point at which V+ power can reach the circuit is from XLR2. But I don't see how power gets distributed. If V+ is present on pin 2 or 3, it will only feed the drain of Q3 or Q2. Assuming that there is sufficient Vin generated by the microphone to trigger the gates of Q1 & Q4, there is no V+ on the drains of Q1 & Q4 to feed through to the gates of Q2 or Q3.?
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Clearly, I am missing something about FET functionality.? Can I get a clue?
