Newport Test Labs measured the Rotel A14MkII’s power output as being comfortably above specification driving both its channels into 8Ω loads, with the Rotel delivering a best result at a frequency of 1kHz of 105-watts per channel. At 20kHz output dropped a little to 100-watts, while at 20Hz it dropped further again, to be 90-watts per channel, still 10-watts per channel higher than specification.
The overall frequency response of the Rotel A14MkII was incredibly wide-band, extending up to 921kHz!
You can see from the tabulated chart that single-channel output was much higher again, indicating both that Rotel is using an unregulated power supply and that the amplifier’s ‘dynamic’ short-term power output would be far higher than the continuous figures shown here.
Measured into 4D loads the Rotel comfortably met its specification at 1kHz, with measuring continuous power output at 156-watts per channel, both channels driven. At the frequency extremes the A14MkII delivered somewhat less, returning 126-watts per channel at 20Hz and 146-watts per channel at 20kHz. Despite being less than 150-watts, these
