Need Help With Building DIY Grounding Cable


I am planning to build a DIY grounding box. I am planning to connect my DAC and Integrated amp to this grounding box by connectig the unused RCA input terminals on the both. For this I need to create two cables with Banana at one end and RCA at the other end so that I can connect them via speaker binding post on grounding box.

I need help with how & where to attach (solder) the cable on RCA socket.

I also need help in understanding if I can connect both L & R RCA input sockets on same amp to same grounding box (assuming I am going to solder the wire on the shell/-ve part of RCA connector)? Also Can I similarly connect all unused inputs on DAC/Amp to grounding box.

I understand attaching multiple inputs to grounding box is not going to amplify the effect & I just want to do it for protection of those input terminals.




I have built 3 ground boxes. 1 each for my speakers with subs built in and one for my system power conditioner. I have them posted on my virtual system. I have noticed an improvement using them.
I connected my main ground box to my power conditioner’s ground lug spade to the ground box with banana. My speakers are connected spade to banana.
You can connect individual components to the box directly as well using one open rca or use one component (Amp) as a component hub connecting all components to the amp then only the amp connects to the ground box. Some use alligator clamps on open rca input but I feel rca connectors stay connected better. I soldered my rca’s to outer ground connection. I have not needed to separate digital and analog. Good luck with it. Fun stuff.

Check out this link very helpful ground box info. I own one of his RF Router for my HT system. Also, search agon thread on ground boxes.


@tksteingraber Thank you for your response. Yes I am going to connect the bnana plug to the shell/-ve of RCA plug leaving the center pin as it is.  I saw the photos and desription of your ground box, it surely looks nice.

Just remember signal ground and chassis ground are not the same. If you components are balanced be very careful. Typically the neg on the RCA or the outer circle is the only thing connected to ground as long as the components are not XLR/ balanced. 

@hsounds my components are not balanced and I am not using any balanced input to attach the ground box, it will be only to the unused unbalnced inputs on DAC and integrated amp. Thanks for the caution.