For optimum signal-to-noise performance choose an amplifier with sufficient bandwidth corresponding to the required signal bandwidth. However, keep in mind that unnecessary high bandwidth introduces more wideband noise. Therefore, FEMTO offers HVA Voltage Amplifiers with three different upper cut-off frequencies to match individual measurement requirements. As with all FEMTO Adjustable-Gain Amplifiers the bandwidth remains constant when switching between the different gain settings which is very important for measuring fast signals and pulses.

Applications include amplification of Digital Signals (no Baseline Shift at any Digital Code), photomultiplier amplifier.