Coupling Banana Plugs

"04-20-15: Denman
Monster used to have a model banana plug called the Exterminator that had a hole on its rear to piggyback another banana plug.I still have some,but they aren't for sale."

They still make connectors like that but they won't work in this case. Both ends need to be female.

Googling "banana plug coupler," with the quotes, returns what appear to be a number of promising choices. The most efficient way to peruse them, amidst a number of irrelevant results that are also returned, is probably via the Google Images link.

Regards,
-- Al

Thanks Al, The one highlighted in yellow is what my DIY looks like.
It seems all that would work on the image link that you have provided is either in China or the UK. Nothing in the USA.

OK. Since the couplers have uninsulated metal, make sure of course that the two couplers used for each channel cannot come in contact with each other, or with anything else that is conductive or grounded. You may want to wrap them with electrical tape.

Regards,
-- Al

Good point. I used some clear thick spiral wrap around the metal.