The 100S1 from Electronics & Innovation Ltd is a RF Amplifier with Frequency 20 kHz to 1 MHz, Power Gain 50 dB, Gain Flatness +/- 1 dB, Harmonics -30 dBc, AC Voltage 84 to 240 V. Tags: Benchtop / Rackmount, Power Amplifier. More details for 100S1 can be seen below.