Outlet is "Open Ground" - Is There Still a Safe Way to Connect to My Audio Gear?

@vinylfun 

I hope the electrical service and electrical panel in your home is not the original installed in 1962. 

As for your safety concerns using the ungrounded outlet your audio system is plugged into, you could buy one of these to feed the power to your audio system for now.

Example of:

GFCI plug-in pigtail  

More examples to choose from.

https://www.homedepot.com/b/Electrical-Electrical-Cords-Extension-Cords-GFCI-Plugs/N-5yc1vZcger

.

All I know is when the amp was plugged directly to the mains, it's metal front cover conveyed some minor current flow and when plugged into the Panamax, it was resolved.

I am not in a position to rewire my entire home either DIY or via a paid professional. I also don't own equipment anywhere near true audiophile or reference level cost or performance.

@motown-l  I understand money is a concern, but this sounds bad.  Not saying you need to rewire your home, but it sounds like a lifted neutral which can cause all sorts of electrical and life safety issues. 

Strongly suggest you get the cheap-o tester I recommended and see what it t4ells you, then consult with an electrician.  It's quite possible this is a small fix, and if it's a major fix it may well save your home. 

Thank you for the helpful additional insights, thoughts and recommendations.

Good news!  The home's current main panel was put in about 5 - 10 years ago. The home's prior owner is a builder.  He lived here 22 years and was renovating all over, up to a few months before he sold in 2023.  

Today I'll get a Husky GFCI plug-in adapter for the Open Ground outlet, to add some safety, if not protection against surges...Next I'll look in to an electrician installing a dedicated power circuit for the audio equipment and/or doing a full home re-wiring as needed...thank you. 

@vinylfun +1 for the dedicated line. I ran one to my listening room and noticed the system sounded quieter.