About the only objective thing I can say about HEC is that they do design and build their own PSU's but, they do not supply those PSU's to independent reviewers (HardwareSecrets, JonnyGuru, [H]ard|OCP and the like). Most discussions I've found go something along the lines of "they are stable PSU's" but again these are not electrical engineers explaining what is going on inside nor measuring deviations from the ideal values. I really don't know what to say about it's quality other than owners seem to be contnet