Active3 is the next generation of biopotential measurement systems for scientific research. The Active3 its cutting-edge SAR analog-to-digital converter technology offers perfect noise spectrum with total absence of spurious tones. BioSemi's third-generation active electrodes and amplifier system - the ActiveThree - combines extremely high signal quality, portability, low power consumption, and ease of use.

The ActiveThree can come configured with up to 142 channels of EEG/EXG electrodes and sensors. All 142 channels are fully DC-coupled and equipped with a novel 24-bit SAR (successive approximation register) A/D converter. This is the latest ADC technology available on the market, allowing for the highest signal quality with high interference suppression, offering a clean frequency spectrum. New low-voltage components further allow for low power consumption compared to its predecessors. As a result, a much smaller-sized battery is used, leading to a decrease in both the size and weight of the main AD-box. Additionally, the battery can be purchased anywhere locally, as it is a standard single battery cell. Auxiliary sensors such as respiration belts, GSR/EDA sensors, and response switches are now automatically detected and configured by the system. Last but not least, the CMS/DRL circuitry has improved in interference suppression.