Guerrilla RF Inc. offers two new models of high linearity gain block amplifiers featuring a combination of simple-application schematics, flat gain, and high compressed output power with operation in the DC to 4 GHz frequency range. The GRF2012 and GRF 2013 models feature flat gain and flexible biasing for high levels of re-use within single designs and across multiple platforms. They are ideally used as cost-effective pre-drivers for broadband GaN high power amplifiers, and for many other general purpose, high performance gain block applications.