The AMP2057 from Exodus Advanced Communications is a RF Amplifier with Frequency 800 MHz to 4.2 GHz, Gain 50 dB, Power Gain 50 dB, Gain Flatness 4 dB, Input Power 8 dBm. Tags: Benchtop / Rackmount, Power Amplifier. More details for AMP2057 can be seen below.