The term 'amps up' is a phrase used to describe increasing the power or intensity of something. In this case, it is referring to three different units of measurement: REVS (4 letters), PEPS (4 letters), and OHMS (4 letters). REVS stands for revolutions per second, which is a measure of rotational speed. PEPS stands for pulses per second, which is a measure of frequency. OHMS is a measure of electrical resistance. All three of these measurements can be increased by 'amps up, ' meaning that the power or intensity of the measurement is increased.