g.tec provides complete MATLAB-based research and development systems, including all hard- and software components needed for data acquisition, real-time and off-line data analysis, data classification and providing neurofeedback. A BCI system can be built with g.MOBIlab+, g.USBamp, g.HIamp or g.Nautilus. g.MOBIlab+ is available with up to 8 EEG channels with wireless signal transmission and is portable. g.USBamp is available for 16-64 EEG channels and transmits the data over USB to the PC or notebook. g.HIamp acquires 64 - 256 channels over USB. g.Nautilus wireless EEG is available with 8 - 64 channels.