Silver on synthetic core.
The Perpetual Cadenza variation is a lower tension string which feels very light under the fingers and requires little effort.
Teacher
2
out of
2
found the following review helpful
Pros: The sound is strong and they stayed tuned up fairly quickly. They are quite loud strings which isi what I needed.
Cons: They are more brilliant than I would like and lack the warmth of the Evah Pirazzi Gold set.
Other: I'm glad I tried them but I may just continue to use them and then return to the Evah Pirazzi Gold.