Schipo,
Having owned several Sunfire products, including amps, I have never seen one with a blue light, or dual power cords.
I can also vouch for their customer service as well.
You may very well have had excellent service from Classe, but I'm not sure you have ever dealt with Sunfire. If you had a bad experience with them, it may well be that you were attempting to get service from them on an amp they did not manufacture, if it was the one you describe in your post above.
Having owned several Sunfire products, including amps, I have never seen one with a blue light, or dual power cords.
I can also vouch for their customer service as well.
You may very well have had excellent service from Classe, but I'm not sure you have ever dealt with Sunfire. If you had a bad experience with them, it may well be that you were attempting to get service from them on an amp they did not manufacture, if it was the one you describe in your post above.