ADCOM GFA-585se STEREO POWER AMPLIFIER
Newport Test Labs measured the both-channels-driven into 8Ω power output of the Adcom GFA-585se as a just a few watts shy of 500-watts per channel (496-watts), which is above specification. Importantly, it is able to deliver this power at any frequency across the audio spectrum, from 20Hz to 20kHz, as you can see from the tabulated figures and from the adjacent bar graphs.
When only a single channel was driven into the same load, the GFA-585se’s output power increased to 530-watts per channel at the frequency extremes, and to 545-watts per channel at 1kHz.
Driven into 4Ω loads, Newport Test Labs measured power output at 784-watts per channel, both channels driven, using a 1kHz test signal, and 756-watts per channel, both channels driven, at the ends of the audio spectrum — 20Hz and 20kHz. Again, these figures are higher than Adcom’s specification of 600-watts per channel.
When just a single channel was driven measured power output at 1kHz as 900-watts per channel, and at 20Hz and 20kHz as 870-watts per channel.
