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What's the gain? Got a schematic?

voltage gain is 21, but I can make it any value you want.

What type of power supply do you recommend for this? Regulated, unregulated, etc...

Honestly anything will work, as long as it's bipolar, can deliver about 3 amps max, and anywhere between +-12 and +-18. The op-amps have an amazing PSRR, so power supply noise doesn't affect anything. Even a bipolar SMPS would be just fine.

I would just throw together a transformer, a bridge rec, and 2 decent caps. Easy.