The LPBF-01G amplifier / filter is designed to amplify and filter small bio-electrical signals. The input voltage range is ±12 V, the inputs are protected up to ±200 V. All inputs and the output are BNC-connectors.

The unit is equipped with a unipolar input stage with an AC/O/DC switch. The input stage is followed by the offset compensation.
The gain stage allows the amplification of the signal from 1-100 in 8 steps set by a rotary switch.
The amplified signal is applied to the output filter. This four-pole Bessel lowpass filter has sixteen corner frequencies (20 Hz - 20 kHz). The output filter can also be bypassed by using a toggle switch. Filter and gain are monitored at the BNC connectors (1V / step).