What is the difference between “two filter” Classics and the higher end “four filter” models?
Two filter (Classic Series) and four filter (Pro, Quantum, & XLT) are terms used to describe the amount of electronic circuitry a metal detector uses to deal with both discrimination and ground mineral elimination. A two filter model will work great in low to medium ground minerals and offer faster response between close together targets in trashy areas. Two filter models are user friendly, lightweight, and less expensive. Four filter models typically detect deeper in mineralized ground, have superior audio discrimination and depth, and offer more advanced features.
