The model NYXL09564 has been specifically designed for 7-string guitars by Strandberg. The string gauges in this set are tailored to the variable scale length of this instrument.

D'Addario NYXL guitar strings are more durable and louder. At the same time, they offer better tuning stability than any strings you have ever played. The NYXL strings were developed, perfected, and manufactured by D'Addario in New York. The new break-resistant core made from high-carbon steel alloy provides a new level of playability, reliability, and performance. The NYXL strings feature increased durability and up to 131% improved tuning stability. This was achieved through a completely new wire drawing and winding process. The new formula for the nickel winding creates a stronger magnetism, resulting in a more powerful output and improved mid-range frequency response, leading to greater presence and better crunch.