There are no filters within the Smarting device. This means that your data will always be streamed and recorded completely raw.
However, in the SMARTING Streamer software, the signals are filtered with a high-pass filter for visualization purposes only, and this filter is always on. This just ensures the baseline of the signals is around 0 for optimal visualization.
Additionally, you can turn on a band-pass filter (1-40Hz) for visualization only. This filter is available as a button in Smarting streamer software, where the signals are visualized.