Do power conditioners help with unwanted hum/noise

jb1-

The OP likely jumped out of a window if he had to endure 17 years of  hum.

Check out an older MIT Z Stabilizer 2. And an Equitech 2Q. Good luck.

I have an all-tube system and have had a slight hum for about a year.  If I plug the amps directly into the SR orange Duplex outlet boxes the hum is louder.  If I plug the amps direct to my InaKustic 3500P PC the hum is there but not as prevalent.  It does not affect my sound quality but it is annoying because I know that it is there.  BTW, I have a dedicated 20amp line.  My next step is to plug a 2 prong adapter (no ground) into my MIT power cables to see if that changes anything.  

Thoughts?  

Good idea

I just took a three-prong adapter and cut off the ground portion.  I then took my MIT Power cables and plugged them into the adapter and then into my noisy SR orange duplex outlet.  It went from a buzzing noise to almost dead silent.  I guess based on that test I have a grounding issue.  The next step is to talk to Equitech and get a tech out to the house.