What would cause noise (ground noise?) when touching the volume control and tone controls?

So I tried a few more things but I'm still getting the buzz/hum. 

@tubeguy76 

If you did so without talking to the manufacturer then you were wasting your time. This is a problem that has a very specific cause and I suspect that manufacturer, if a good one, would like to know about it.

I've encountered this problem before- as I mentioned in my prior post, its most likely a grounding problem, such as the controls themselves are insulated from the chassis since the chassis is finished with either paint or anodizing (both of which insulate). If the control bodies are not grounded they can pick up noise; when you touch them that noise pickup will be more obvious.

If the chassis is not properly grounded it can have the same effect. The chassis is supposed to be a safe harbor in which the audio circuit resides. If its not grounded, it can instead inject noise. Its worth getting this fixed.

Call the manufacturer (or dealer, if you can't contact the manufacturer)!

@tubeguy76   Since you confirmed that your preamp is a tube preamp, it would be instructive to know what make and model and also the tube compliment that it uses. While a grounding problem is likely, my suggestion about a tube issue is also possible. 

IMHO,It is a little crazy in this day and age that manufacturer's still have problems with grounding issues! 

@daveyf I'm going to not mention the manufacturer right now until I get a chance to speak with them about it.  I don't want to cause any issues for them in case the issue is really mine and not theirs.

I did try the cheater plug to remove the ground and the noise was still there so I'm thinking a tube or maybe a bad transformer?  We'll see, I'll update the thread as soon as I can.  :)

I fixed it.  The left channel output ground wire had fallen out of its terminal block.  It's quiet now.  :)

Use a power conditioner plugged into one outlet.

And then buy a new dog