D'ADDARIO Mandolin Phosphor Bronze Medium XT 11-40
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What you need to know
What you need to know
- Phosphor bronze sound : brightness, warmth, and ideal definition for an expressive mandolin, both in rhythm and lead playing
- Ultra-thin hydrophobic XT coating : feel and response close to uncoated strings, while repelling moisture and corrosion
- Enhanced longevity : the XT coating preserves the tone and feel of new strings, with a lifespan claimed to be at least 3 times longer
- Improved strength and tuning stability : high carbon steel NY Steel + Fusion Twist ball end to reduce breakage and stabilize tuning
Manufacturer Information
D'addario And Co
https://www.daddario.com
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D'Addario Europe Ltd
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The "new" feel lasts longer without sacrificing touch
Designed for musicians who want a lively sound and natural comfort, the XT Mandolin Phosphor Bronze Medium strings rely on an enhanced microscopic coating, developed at D'Addario's New York factory and applied to all strings (except traditional high-pitched strings). Each string of the six-string set receives this extremely thin hydrophobic film, designed to preserve attack, dynamics, and finger feel while reducing the effects of sweat and oxidation. The result: a mandolin that retains its brightness longer, with optimized tuning stability and break resistance for intense practice sessions, studio work, or stage performance.
Technical specifications
| Format | standard | Nbr of strings | 6 |
| Type of cord attachment | Ball end | Color | Transparent |
| Category | mandolines | ||
| Brand | D'Addario | Treatment | ultra-thin XT hydrophobic coating, feel close to that of uncoated strings |
| Model | XT Mandolin Phosphor Bronze Medium | Development and application of the microscopic coating | developed at the New York factory, applied to all strings (excluding classical treble strings) |
| String gauge | 11-40 (Medium) | Durability | new-string tone and feel, with a claimed lifespan at least 3 times longer |
| Alloy | Phosphor Bronze | Claimed performance | up to 42% more resistant and 131% greater tuning stability than traditional strings |
| Core | high-carbon steel (NY Steel) | Set composition | six strings |
Questions frequently asked
What is the gauge of D'Addario XT Mandolin Phosphor Bronze Medium 11-40 strings?
The set features a Medium 11-40 gauge, with six ball-end strings.
Are the XT mandolin strings treated against oxidation?
An extremely thin hydrophobic XT coating is applied on the strings. It reduces the effects of sweat and oxidation while maintaining a feel close to untreated strings.
What tone does phosphor bronze produce on a mandolin?
Phosphor Bronze alloy provides a consistently bright tone. The microscopic coating aims to preserve attack and dynamics over time.
What is the claimed lifespan of the XT Mandolin strings?
The lifespan is claimed to be at least three times longer than untreated strings, retaining the tone and feel of new strings.
Do these mandolin strings stay in tune better?
Thanks to their NY Steel high carbon steel core, these strings offer 131% better tuning stability compared to traditional strings. Their breakage resistance is claimed up to 42% higher. This design is intended for intensive studio or stage use.



