The newer NAD products, users have reported reliability issues as posted in the forums over a period of time. They, NAD rested on their earlier reputation of building reliable good sounding units for the money which is certainly not the case now for some units.
After some research it appears the M3 was designed by NADs director of advanced development, Bjorn Eric Edvardson in China.
It also appears that there is not too many reported issues other than one I could find which was described by the owner as switching to stand-by mode while listening to music or switching off while in standby mode. A tech posted that he thought a leaky capacitor in the protection circuitry was the issue.
After some research it appears the M3 was designed by NADs director of advanced development, Bjorn Eric Edvardson in China.
It also appears that there is not too many reported issues other than one I could find which was described by the owner as switching to stand-by mode while listening to music or switching off while in standby mode. A tech posted that he thought a leaky capacitor in the protection circuitry was the issue.