The MT 400 from Prana is a RF Amplifier with Frequency 80 MHz to 1 GHz, Gain 54 dB, Gain Flatness ±3 dB, Output Power 53.98 to 56.02 dBm, Output Power 250.03 to 399.94 W. Tags: Benchtop / Rackmount, Power Amplifier. More details for MT 400 can be seen below.