How much hum is normal from a new tube amp

The amp costs $5K+. You appear to have a return window. why settle on living with something that will continually be, at a minimum , an annoyance.

What he said ^^^^^

Have you tried a cheater cord? Or perhaps a different outlet on a different circuit?

ozzy

Yes a different chord and outlet. I have a Furman R8 strip. I haven't had any hum on previous tube amp.

@fractin

They will take it back but, I Love the amp. I guess my question should be if I get a replacement with the same amp will I have the same problem.

It has been suggested that this a an issue with KT150 amps in general.

I think I should pose the question on a new post. "How many have had hum issues with KT150 tube amps".