NB1256 Nickel Bronze Acoustic Guitar Strings, Light Top / Med Bottom, 12-56

D'Addario's premium uncoated acoustic string set that provides a crisp and clear sound to accentuate the unique tone of your guitar. NB1256 combines medium gauge bottom strings for increased resonance and volume with light gauge top strings for more comfortable playability and single note bending.

Nickel Bronze strings are the premium uncoated acoustic strings by D'Addario. Featuring an innovative combination of nickel-plated phosphor bronze wrapped onto a high carbon NY steel core, these strings bring out the unique tonal characteristics of any guitar, allowing its natural voice to truly shine. Nickel Bronze delivers unrivaled clarity, resonance and projection, as well as outstanding balance and harmonically rich overtones. Players will also enjoy improved tuning stability and higher break resistance, thanks to D'Addario-engineered NY Steel cores and plain steel strings.


  • Delivers a full tonal spectrum, revealing the unique tonal qualities of your acoustic guitar
  • Increased corrosion resistance for a longer lasting uncoated string
  • Features D'Addario's exclusive high-carbon NY steel for unprecedented strength and tuning stability
  • Environmentally-friendly, corrosion-resistant packaging keeps strings fresh
  • Made in the U.S.A. for the highest quality and performance
  • String Gauges: Plain Steel .012, .016, Nickel Bronze Wound .025, .035, .045, .056


Item # Note Inches mm lbs kg
NB1256 E 0.0120 0.3048 27.420 12.448
NB1256 B 0.0160 0.4064 23.310 10.582
NB1256 G 0.0250 0.6350 32.680 14.836
NB1256 D 0.0350 0.8890 35.690 16.203
NB1256 A 0.0450 11.430 32.600 14.800
NB1256 E 0.0560 14.224 27.600 12.530


Luciano Zadro
Giacomo Pasquali