D'ADDARIO BT MEDIUM - 12-56
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What you need to know
What you need to know
- Nickel Bronze : clear trebles and well-defined basses to reveal the natural tonal signature of your acoustic guitar.
- Balanced Tension : a more even feel under the fingers, consistent attack, and more stable response string by string.
- Medium Gauge 13.5-56 : power, projection, and resonance, ideal for pick playing and strong rhythm strumming.
- Uncoated : direct touch and precise articulation, for a raw and defined sound.
Manufacturer Information
D'addario And Co
https://www.daddario.com
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D'Addario Europe Ltd
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A Medium Set Designed for Projection and Definition
The D'Addario NB13556BT set is aimed at acoustic guitarists seeking a powerful, clear, and well-focused sound without the feel of a coating. Thanks to the Nickel Bronze alloy, your instrument retains its character while gaining clarity, with note separation especially appreciated in complex chords, energetic strumming, or precise picking. The balanced tension provides more consistent playability across the entire neck: each string responds more uniformly, helping maintain steady dynamics and comfortable intonation even when playing loudly.
Technical specifications
| Format | standard | Nbr of strings | 6 |
| Type of cord attachment | Without | Color | Bronze |
| Category | acoustic | ||
| Brand | D'Addario And Co | Tension | balanced tension |
| Model | NB13556BT | Gauge | Medium |
| Type | acoustic guitar string set | Sizes | 13.5-56 |
| Series | Nickel Bronze | Tone | clear and well-defined sounds |
| Coating | uncoated | Recommended Use | pick playing, intensive rhythm |
Questions frequently asked
Are these 13.5-56 gauge strings compatible with a 6-string acoustic guitar?
A six-string acoustic guitar is suited for this 13.5-56 gauge set. The Medium tension is associated with pick playing and intensive rhythm use. The NB13556BT model features a balanced tension across the entire set.
What sound do D'Addario NB13556BT Nickel Bronze strings produce?
The Nickel Bronze alloy delivers clear and well-defined tones. Note separation is emphasized for complex chords, energetic strumming, and precise picking.
Are the D'Addario NB13556BT strings coated?
This Nickel Bronze set is advertised as uncoated.
What does the balanced tension change on this Medium set?
Balanced Tension aims for a more uniform response from each string across the fretboard. A consistent dynamic and comfortable intonation are sought, even during aggressive playing.
For which playing styles is the 13.5-56 gauge recommended?
The 13.5-56 gauge is recommended for pick playing and intensive rhythmic styles. The clear and focused sound can also support precise fingerpicking.



