[Sonics]

Tried a set on my Martin earlier this year and I'm kicking myself that I didn't try them sooner. Rotosound 'Swing Bass' (STEEL roundwound strings) are THE defacto bass strings, so it's reasonable to presume Rotosound can put together a good acoustic string.

Tonally the JK-12 are warm/neutral, in the same ballpark as D'addario's EJ-16 but more bass. I think this is due to being a hybrid light/medium set. I initially did not realize this and had presumed it was a 'regular' 12 gauge light set, but the string tension felt odd, in a good way.

Overall I'm impressed with the tone and feel of the string. String life is what you would expect from an uncoated string. If you like EJ16s. then you will like the Jumbo Kings. I think price (dependent on your geographical location) will determine which is the better buy.

These strings are also presented in a airtight bag containing a silica gel pack.