Replacement circuits for B2 Pro?

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Well-known member
Mar 15, 2018
What are some good DIY mic circuits (looking for PCBs that'll fit) for the newer Behringer B2 Pro?

There doesn't need to be any EQ in the circuit, I'm actually planning to use my current ones to build mics with Oktava capsules. I know the U87 circuit on here can fit the B2 Pro, but I don't need the EQ (though I guess I could just omit the EQ capacitor too).

Preferably something with a transformer, though I don't know if it's worth it to reuse the transformers in the Oktava MK-218/319/220, since I don't know much about them.

I couldn't find any of the older B2 Pros with the removable headbasket, so I just bought a couple newer ones since they were cheap enough, and I like the size of the body.