I think I speak for every member in saying a big "Thanks" to Mike for each and every post, adding to our technical knowledge here at Audiocircle. I'm honored for his edification in this particular instance.
For one, it's great to see how honest or conservative are Hypex' specs. I presumed (or possibly read Mike's specs earlier) that Ncore distortion rises into lowest impedance loads. I posted as much at DIYaudio. Someone quickly replied and contradicted me, stating that though most amps increase distortion as impedance drops, such is not the case with Ncore.
I must have read several hundred or more technical reports of audio amplifiers. In each and every case, and Ncore appears no exception, as load impedance falls magnitude of distortion increases and/or distortion spectra worsens (becomes increasingly audible and/or objectionable, i.e. higher rate of odd vs. even order), usually or always both.
Theoretically, if the opposite were true, the best performing load is a dead short, which in SS terms is called a dead amplifier and room filled with, as they say in the fire business, "products of combustion."
If I had to bet I'd naturally presume the latter person is incorrect and Mike's report is accurate.
