Abstract: Arrangements of Class AB (push-pull) amplifiers, one in a higher voltage configuration and one in a lower voltage configuration, to achieve a high intercept at low power as well as a low noise figure in a complementary technology allowing for higher performance at lower power. In an illustrative embodiment, the invention includes a first circuit for receiving an input signal; a second circuit for shifting a level of the input signal; and a third circuit for amplifying the input signal. In the illustrative embodiment, the third circuit includes first and second transistors Q3 and Q4 connected in a push-pull configuration. In the illustrative embodiment, the first and second transistors Q3 and Q4 are connected to form Class AB amplifiers and the first transistor Q3 is of a first type and the second transistor Q4 is of a second type. The teachings of the present invention are illustrated in a differential amplifier.