Rotosound SM66 Swing Bass Guitar Strings (Light)


93 out of 100. Incorporating 250+ ratings and reviews.

Street Price: 

Rotosound SM66 Swing Bass Guitar Strings

Gearank Recommendation

The Rotosound SM66 appeared on our recommended list for Bass Guitar Strings from February 2020 until August 2022 when it had been out-ranked by other sets of strings.


Jaco Pastorius, Billy Sheehan (Mr. Big), Geddy Lee (Rush) and John Paul Jones (Led Zeppelin) are just a few of the many virtuoso bassists who have used Rotosound bass strings.

And the Swing Bass is one of their more popular, and long time running sets, said to be in production for more than half a century now.

The original Swing Bass set was developed to meet the demands of The Who's John Entwistle, with its roundwound design and balanced tone. It then became popular among bassists of different musical styles and backgrounds, with the SM66 being the best rated among Rotosound's light gauge sets.

When it comes to good quality bass strings, it'll be hard to argue with Geddy, Jaco and Billy.


  • Gauges: .040 .060 .080 .100
  • Material: Stainless Steel
  • Coated: No
Although this was previously on our recommended list there are now more highly rated options available in our guide to The Best Bass Strings