Nutube B1 T7-T8 voltage.

Hi All,

I have been using my Nutube B1 for about a week. It sounds great. It is not doing anything odd. I do have a question about it though. When I checked to voltage between ground, T7 and T8, the recommended level is 10 volts. Mine will not go that low. I have set them both the same at 13.47. That is the lowest one channel will go. Does anyone have any ideas for why that might be? Am I risking problems running it with the voltage at this level?

Thanks