Get raw EEG data

As far as I understand for EegDoubleChannel SDK performs some signal processing(bandpass + bandstop). We wanna get raw data, is it a correct way to get it https://github.com/Andrey1994/brainflow/pull/33/files ? Will it still work in future versions?

And could you share details about bandpass and bandstop filters(order, frequencies, type) to allow us to reproduce filtered data if we/users want to?