short for ampere.
short for amplifier.
another term for adenylic acid.
play (music) through electric amplification
a cyclic form of adenosine monophosphate (adenylic acid) which plays a major role in controlling many enzyme-catalysed processes in living cells
an amplifier with high gain and high input impedance (usually with external feedback), used especially in circuits for performing mathematical operations on an input voltage
short for preamplifier.