The R&S UPL66 (and UPL06) Audio Analyzer performs practically all types of analog measurements, from frequency response to externally controlled sweeps with reference traces, determination of 3rd-order difference frequency distortion, spectral display of demodulated wow and flutter signals, etc. In contrast to many other analyzers the UPL66 is capable of performing real dual channel measurements in the audio frequency range, i.e., there is no need for switchover between two inputs.
The Rohde & Schwarz UPL66 and UPL06 models feature excellent specifications: analgo sinewave generation with harmonics of typical -115 dB, spectrum displays with a noise floor below -140 dB for analog and -160 dB for digital interfaces, FFT with a maximum frequency resolution of 0.05 Hz, etc.
The R&S UPL66 Audio Analyzer offers a large selection of functions for both analog and digital interfaces (with option B2):
