RSA - since you are retired and have time on your hands can you make a solder joint?
If yes - take a look at ....
http://www.image99.net/blog/files/41
27b5fe2694586e383104364360373b-74.html
I use one with Pure Harmony RCA's, but you could opt for the Copper Harmony and use a copper central conductor which would make them even more affordable - probably around $85 in total.
The Copper Harmony you can order from Parts Connexion
I currently stream up to 24/192 and their performance is outstanding - the best SPDIF I've used to date
Regards...