I performed a full set of measurements on the Musical Fidelity Nu-Vista 800.21 using my Audio Precision SYS2722 system.1 As the amplifier is specified as having a maximum output power of 330Wpc into 8 ohms, I preconditioned it before the measurements by following the CEA’s recommendation of running it at one-eighth that power into 8 ohms for 30 minutes. Following that period, the top panel was warm, at 100.1°F (37.9°C), and the side-mounted heatsinks hotter, at 130.1°F (54.5°C).
The Nu-Vista 800.2’s volume control operated in accurate 0.5dB steps. At the maximum volume control setting