EP Headbox is designed specifically for EP examinations. It can also be used as a TruTrace EMG 4ch Headbox. An advantage of the EP headbox is that no electrode connection replacement is needed during the examination, thanks to its hardware-interchangeable reference and active electrodes. It features two 5-pin DIN connectors (including pins for patient ground and shielding), individual active, reference and patient ground connectors with 1.5 mm touch-proof connectors, and a temperature probe connector.