Blue Flatwound Bass Strings




In a continuing process of refinement, we have re-engineered our Flatwound Bass Strings for improved tone, feel, and consistency.

The challenge was to recreate a true vintage tone and feel, yet retain a strong fundamental to sit well in the mix. Precision wound on a cello string winder for unequalled quality with a stainless wrap on hex core. Superb for fretless basses or that classic Motown sound! Designed for top-loading bridges. Not recommended for through-body stringing.

Unanimously praised by all of our beta testers!

“The new Sadowsky Bass Flatwounds are the perfect string for that vintage sound: sweet feel in both hands, big round fundamental, and that old-school thumpiness right out of the package that just gets better with age!” —Michael Lizarraga, Los Angeles

“You’re gonna love the way you sound….I guarantee it!” —Roger Sadowsky

Choose from the following gauges.

  • 4 String Light: 40-60-80-100
  • 4 String Standard: 45-65-85-105
  • 5 String Light: 40-60-80-100-125T
  • 5 String Standard: 45-65-85-105-130T

Also, for a quick guide on changing strings, visit: How to Change the Strings on Your Sadowsky Bass

Additional information

Weight 0.40 lbs
Dimensions 7 × 7 × 1 in


  1. gary.holdsworth

    I will start by saying I was a big fan of the Black Label flats that these have now replaced in the product line. Those were Goldilocks tension strings for me, not too taught, not too floppy/loose, just right. I’ve owned several sets of the previous flats, and consider myself a flats guy (I’ve tried virtually every set out there).

    Now to these Blue Label flats, they pick up right where the older strings left off.

    I ordered the light gauge version and installed them on a 4-string jazz bass. The feel right out of the package is very comfy, with no stickiness that has to wear off. Tension is just right in my book. When compared to other popular flatwound strings, I can tell you that the tension is lower than Chromes, and tighter than TIs, which again, hits my sweet spot.

    Tone is subjective, and I am pretty poor at describing tone, but I find the tone of these strings is exactly what I am looking for. They are warm with a punchy edge to them that allows them to not become lost in a rock-band mix. Reminiscent of the previous iteration of the Sadowsky flatwounds, with maybe just a bit more edge (I would have to add that I’d need to compare the two sets of strings on the same bass to really be able to tell the difference, and I have not done that comparison. The bass I have these on had rounds previously installed).

    If there is a takeaway from this review, it would be this: Just what you want in a flatwound string. Takes the clank and finger noise away. Gives nearly any bass a warmth injection. Perfect tension (IMO). Feel great on the fingers. I’ll be ordering more over time (as I tend to keep flats on my basses for a good long time).

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