1000W FM pallet 87.5-108MHz, 43 - 48Volts Input/ Output 50 ohms Pout 1000W with 3W input. 25dB gain minimum. Low distortion Class B push-pull. Small size: only 2.25 in x 4.0 inches 78% efficiency typical. Power requirements 22 to 24 ADC 800W out at 43V. Power requirements 25 to 27 ADC 1000W out at 50V