The QPAS-4-30-40-40S from Qualwave is a RF Amplifier with Frequency 0.004 to 0.03 GHz, Gain 40 dB, Power Gain 40 dB, Gain Flatness ±2 dB, Saturated Power 40 dBm. Tags: Benchtop / Rackmount, Power Amplifier. More details for QPAS-4-30-40-40S can be seen below.