Like treble boosters, but wish you had more control over them? From the manufacturer:
The Snap takes the concept behind the POP but replaces the sharp treble booster with a smoother one and adds a third centre knob to reintroduce bass. Fans of Brian May type riffs may find something for them here.
Power Requirements +9VDC @40mA
This is the Deluxe version, which has a wooden box, bandana, and laser engraved badge.