Looking for good interconnects for narrowly spaced jacks

@bondmanp  The best I can tell you is it looks to me like it just might work, albeit barely. The barrels on these Switchcraft plugs are narrow which is why I had a look on your behalf. The OD is 0.37", which means if your RCA jacks are on 3/8" (0.375") centers, you should have just enough space to make it work. Again, these are good quality and inexpensive, so it's certainly worth having a go.

I had a pair of RCA's made for me by Pine Tree Audio. They were for my 1970's reel-to-reel tape deck. He did some measurements, and found a set of Switchcraft RCAs that would fit. he made up the interconnect, and it has been perfect. Fits my Scott 299A amp from the 60's, too. 

Yers ago my friend acquired a Fisher 500c receiver. The stereo input jacks were very close together. I still had Monster Cables from one of my old stereos. I gave all the pairs I had to him and they fit perfectly. They sounded pretty good too.

You can find them on eBay.

They even have new old stock Monster cables and of course pre owned.