The BioSemi ActiveTwo is a research-grade EEG/biosignal acquisition system supporting up to 256 active EEG channels plus 8 ExG and sensor channels. Each channel uses a dedicated 24-bit delta-sigma ADC with 64x oversampling. Selectable sampling rates: 2048 Hz (all 256 channels), 4096 Hz (128 ch), 8192 Hz (64 ch), 16384 Hz (32 ch). True DC-coupled acquisition captures the full biopotential spectrum including slow cortical potentials. Data transmitted via fiber-optic link for complete electrical isolation (CMRR 150 dB at 50 Hz). Battery-powered front-end for maximum signal integrity. Resolution: 1/512 µV (1.953 pV LSB). The gold standard for high-density EEG research.
This device does not have a current FDA designation. It may be a research tool, preclinical device, or consumer product not subject to FDA medical device regulation.
FDA Device Regulatory Guidance ↗