The final day of Summer NAMM was full of beautifully ornate guitars, fire-breathing heads, and a few fresh stomps.

Henretta Engineering's Big Zapper is a versatile filter that can go from classic '70s space funk to wacky oscillation relatively easy. The circuit is an expanded version of the company's Green Zapper, but with the controls on the outside. The Clock Trigger is especially inspiring because it allows you to create automatic filter sweeps at a variety of speeds. It's available now for $249.

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