Audio Analyzer UPA is a compact instrument allowing all essential audio parameters to be measured at balanced and unbalanced analog audio interfaces Due to its large variety of options it can be optimally adapted to the specific application. The great number of filters available makes the UPA suitable for numerous audio measurements. Model UPA3 is a cost-effective test set with a generator and distortion meter. Due to its remote-control capability (IEC 625/IEEE 488) and high measurement speed, a major application of UPA is in automated testing of audio components in series production.