It's definitely a little unusual, but if you have to design to hit a low price point (as many Chinese engineers are asked to do), you have to jump through some hoops. An output transformer could have made this circuit much simpler, but that costs money...
Very true. I wonder if this was an attempt to make a circuit that had some more “color” than a Schoeps circuit (it’s supposed to be a “U87” after all). I haven’t simulated it, but it seems like this configuration might create some even-order harmonics due to slight asymmetry. Just a guess though…... And yet, a Schoeps circuit would have needed one less JFET
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