Augustine Blue Imperial Classical Guitar Stringsstar rating 5JustinDecember 30, 2010I have been playing on these strings for about 3 weeks now. I love them! They may become my new favorites. They are carbon strings, which I had never played on before, but really enjoy. The have a great warm tone, and the basses and trebles compliment each other nicely. One thing to mention when you put these on, make sure you use a lighter to "ball up" the end of the string because these carbon strings are thinner than a standard nylon and they will slip through the tie block. Tone, sustain, and volume are all great. In fact I thought maybe they were a hard tension string because of the volume, but they don't feel that tight when tuning and Augustine does not say what tension they are. Anyway they sound great and respond wel, I don't think you would be dissappointed with these strings.