Musical Fidelity Nu-Vista 300 power amplifier Measurements part 3
Fig.8 Musical Fidelity Nu-Vista 300, distortion (%) vs continuous output power into (from bottom to top) 8 ohms, 4 ohms, and 2 ohms.
With just one channel driven, and using the Miller Audio Research Amplifier Profiler---which uses a low-duty-cycle toneburst more typical of a music signal---the Nu-Vista 300 delivered 420W into 8 ohms (26.2dBW), 784W into 4 ohms, and 1358W into 2 ohms! This is shown graphically in fig.9. Note this graph's logarithmic scales, which I used because of the amplifier's very low distortion. Only into a 1 ohm load (green trace) did the Musical Fidelity stumble, with the clipping point dropping to 996W.
Fig.9 Musical Fidelity Nu-Vista 300, distortion (%) vs 1kHz burst output power into 8 ohms (black trace), 4 ohms (red), 2 ohms (blue), and 1 ohm (green).
It's fair to say that this amplifier will deliver more than enough low-distortion power into any loudspeaker you care to match it with.---John Atkinson