Vampire "Tiffany" style RCA. I really like the fact yo only solder the center conductor, the ground is a compression fit just screwed together. Used them for years. work great, sound great.
The Tiffany style come in different sizes for different size cable too!Of all RCA to use home made I found the Tiffany style to be the best.Second WBT. Third and yes the soldering to is annoying for WBT and Cardas. Worst soldering hassle are those plastic shell with just a small ground metal dot. PITA.