The Vampire M1F Female RCA is available as OFC copper with direct gold plate. I like these and the Cardas you are already considering.
Visit this link at Welborne labs, ask for tech specs to see if the physical size is suitable for your application.
http://www.welbornelabs.com/vampconn.htm
Visit this link at Welborne labs, ask for tech specs to see if the physical size is suitable for your application.
http://www.welbornelabs.com/vampconn.htm