Gear article
D'Addario EJ13 80/20 Bronze Acoustic Strings
The D'Addario EJ13 80/20 Bronze Custom Light set is a hybrid-gauge string set designed for acoustic guitars. It combines the easier playability of a lighter top end with a 52-gauge low E string for enhanced projection and depth.

Overview
The D'Addario EJ13 is a six-string set specifically engineered for acoustic guitarists who require a balance between physical comfort and sonic weight. As an 80/20 Bronze set, it utilizes an alloy consisting of 80% copper and 20% zinc, a composition traditionally favoured for its crisp and articulate response. The set is positioned as a 'Custom Light' gauge, providing a middle ground between standard light and extra-light sets.
Construction and Engineering
The foundation of each EJ13 string is a hexagonally shaped core made from high-carbon steel. This geometry is critical to the string's performance, as the six sharp corners of the core allow the 80/20 bronze wrap wire to grip the core securely. This design ensures that the wrap wire does not slip, which contributes to long-lasting tone, superior intonation, and structural stability under high tension.

Sound Character and Performance
The EJ13 set is noted for its bright, vibrant tone. The 80/20 bronze alloy is known for its initial brilliance, which provides clarity during both studio recording sessions and live performances. Because of the hybrid 11-52 gauging, the strings offer significant depth and projection on the lower frequencies while remaining easy to bend and manipulate on the higher strings.
Suitability
This set is particularly suited for players who find standard light gauges (12-53) slightly too stiff, yet do not want to sacrifice the bass response found in heavier sets. Its balanced tension makes it a versatile choice for various acoustic styles, including folk, pop, and fingerstyle playing where both comfort and volume are required.
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Frequently asked questions
- What is the specific gauge of the D'Addario EJ13 set?
- The EJ13 is a Custom Light set with individual string gauges measuring .011, .015, .022, .032, .042, and .052. This hybrid configuration provides a lighter top for easier playing and a heavier bottom for resonance.
- What material is used for the wrap wire in EJ13 strings?
- These strings are wound with 80/20 Bronze, which is an alloy of 80% copper and 20% zinc. This material is historically significant for its bright, punchy acoustic tone.
- What type of core do these strings use?
- The EJ13 strings feature a hexagonally shaped high-carbon steel core. The hexagonal shape helps the wrap wire stay firmly in place for better durability and tuning stability.
- Are D'Addario EJ13 strings suitable for live performances?
- Yes, the manufacturer describes them as a perfect choice for both studio sessions and live performances. They are designed to provide the projection needed for the stage and the intonation required for recording.
- What is the typical price range for a set of EJ13s?
- A single set of D'Addario EJ13 80/20 Bronze strings typically retails for approximately £8.00. Prices may vary slightly depending on the retailer or bulk purchasing options.
- How does the sound of 80/20 Bronze differ from Phosphor Bronze?
- 80/20 Bronze strings, like the EJ13, generally offer a brighter and more 'crisp' sound compared to Phosphor Bronze. They are often chosen by players who want their acoustic guitar to cut through a mix with more clarity.
- What does 'Custom Light' mean in the context of the EJ13?
- Custom Light refers to the specific hybrid gauging of 11-52. It is lighter than a standard light set (12-53) but heavier than an extra-light set (10-47), offering a compromise between ease of play and tonal volume.
- Do these strings help with guitar intonation?
- Yes, the hexagonal high-carbon steel core is specifically designed to provide superb intonation. This ensures the guitar stays in tune across the entire length of the fretboard.
- Are EJ13 strings intended for electric or acoustic guitars?
- The EJ13 set is designed specifically for acoustic guitars. Using them on an electric guitar would result in very low output from magnetic pickups because bronze is not as magnetically active as nickel or steel.
- How many strings are included in a single pack?
- Each pack contains a complete set of six strings. This is the standard count for most traditional acoustic guitars.
- What is the benefit of the hexagonal core shape?
- The hexagonal core allows the wrap wire to 'bite' into the core material. This mechanical bond prevents the wrap from shifting, which improves tone longevity and tuning accuracy.
- Is this set recommended for beginners?
- Yes, because of the 'Custom Light' 11-52 gauge, these strings are often easier on a beginner's fingers than standard medium or light sets. They provide a comfortable playing experience without losing too much acoustic depth.
