Teknetics Gamma 6000

The Gamma 6000 sits in the middle of the Teknetics range and adds the controls that turn a competent detector into a precise one: manual ground balance, adjustable notch discrimination and a target ID scale with enough resolution to be worth reading. It runs at 7.8 kHz, which suits coins and silver well, and the low weight makes long sessions comfortable. A sensible choice for someone who has learned what their first machine could not do.