In this paper

a multiple-channel high speed preamplifier module with dual-gain is presented

together with its design principle

test methods and performance parameter.By proper choice of the chips and careful circuit design

the preamplifier accomplishes a fine performance in high speed analog signal processing.The 3 dB bandwidth is above 440 MHz for gain factor of 2 and 280 MHz for gain factor of 8

with the leading edge time of less than 2 ns.The preamplifier module has been used in the research project of β-delayed neutron emission of radionuclides in neutron-rich region.