BioSemi's goal is to provide the scientific community with state-of-the-art instrumentation for electro physiology research. Using the latest available technology and offering maximum freedom of configuration and flexibility to integrate our hard- and software in your laboratory setup are the key principles in our designs. The products are specifically designed to be used in research applications only. It consists of a low noise DC coupled post-amplifier, with a first order anti-aliasing filter, followed by a Delta-Sigma modulator with an oversampling rate of 64, and decimation filter with a steep fifth ordersinc response and high resolution 24-bit output. The digital outputs of all the AD converters (up to 256) are digitally multiplexed and sent to the PC via a single optical fiber without any compression or other form of data reduction.