Seymour Duncan AHB-1s Blackout Active Humbucker Set

Other USA-made active humbuckers use unbalanced inputs in a differential preamp. The problem is, an unbalanced differential preamp is not very effective at cancelling hum. The engineers at Seymour Duncan figured out how to capture the tone that players want in an active design, but using balanced inputs. The result is 12dB to 14dB less noise, plus more lows, more highs, and more output.