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Carl Martin Contour Boost Effects Pedal Low High Pass Filter [Contour] - $215.00 : GuitarBassPro!, Bass Guitars Amplifiers Pro Audio and accessories
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Tech 21 Q-Strip EQ and Preamp Pedal Direct Box with 4-band EQ, LPF and HPF, XLR Output and 9V Phantom Power - Zorro Sounds
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NPD - Broughton Low + High Pass Filter. Does a great job of cleaning up muddy low end and hissy high end frequencies I don't want. Just the creamy middle! : r/BassGuitar
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