Problem is what you think you have measured, and quantified as facts, are not true, they're just subjective facts you have convinced yourself are facts. Like saying your NVX, will sound just as good as my HD1200/1, at the same level. Technically it will, but the part your leaving out, is how mine will draw less current, output the same wattage over a wider impedence range, has a greater S/N, so lower noise floor, greater dampening factor, so better control which all will equal what= better sound. And as it took better parts to make such a amp, it will also take more abuse, and more then likely last a lot longer. But yes it did cost more so it should. See I'm not answering by brand loyalty or emotion I'm basing my opinion on hard data that can be measured.