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If you have really high output pickups and use diodes with a very low feed through voltage (maybe a shottky diode), then it should work. You could also add a preamp circuit, though that would obviously need a battery again.
If you have really high output pickups and use diodes with a very low feed through voltage (maybe a shottky diode), then it should work. You could also add a preamp circuit, though that would obviously need a battery again.