The DA4K400M5350AC from Elite RF is a RF Amplifier with Frequency 4 KHz to 400 MHz, Gain 53 dB, Gain Flatness ±4 dB, Output Power 50 to 53 dBm, Output Power 120 to 200 W. Tags: Benchtop / Rackmount, Power Amplifier. More details for DA4K400M5350AC can be seen below.