The QPAS-108-400-55-54S from Qualwave is a RF Amplifier with Frequency 0.108 to 0.4 GHz, Gain 55 dB, Power Gain 55 dB, Gain Flatness ±1.5 dB, Saturated Power 54 dBm. Tags: Benchtop / Rackmount, Power Amplifier. More details for QPAS-108-400-55-54S can be seen below.