Head to head
Belfort Phosphor Bronze Acoustic vs D'Addario Pro-Arte Nylon Classical
The short answer is that the alloys differ (Phosphor bronze against Silver-plated copper wrap on the bass strings). Below, every specification we hold for both is lined up, with the 11 rows that actually differ marked out.

Phosphor Bronze Acoustic
Light
Cheap phosphor bronze from a brand with no published specification

Pro-Arte Nylon Classical
Normal tension, tie-end
The reference nylon set, and the one most classical guitars are voiced around
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Score profile
The editorial axes for strings, overlaid. Where one shape sits outside the other, that is where it gains ground.
- Belfort Phosphor Bronze Acoustic5.8
- D'Addario Pro-Arte Nylon Classical7.2
Scores are Fretline editorial ratings on a 1-10 scale. They are our own assessment and are not supplied or endorsed by Amazon or by any manufacturer.
Specification by specification
| Phosphor Bronze Acoustic | Pro-Arte Nylon Classical | |
|---|---|---|
| Brand | Belfort | D'Addario |
| Model | Phosphor Bronze Acoustic | Pro-Arte Nylon Classical |
| Type | Strings | Strings |
| Fretline score | 5.8 / 10 | 7.2 / 10 |
| Value for money | 7 / 10 | 9 / 10 |
| Amazon rating | 4.6 / 5 (10,002) | 4.6 / 5 (28,780) |
| Price | Under $15 | Under $15 |
| Alloy | Phosphor bronze | Silver-plated copper wrap on the bass strings |
| Winding | Roundwound | Wound basses, clear monofilament nylon trebles |
| Core | — | Multifilament nylon |
| Coating | Uncoated | Uncoated |
| Tension | — | Normal |
| Strings in the set | 6 | 6 |
| Scale length it fits | — | Tie-end, for a classical bridge without pins or ball ends |
| Sets included | 1 | 1 |
| Brightness | 6 / 10 | 6 / 10 |
| Sustain | 5 / 10 | 7 / 10 |
| Durability | 5 / 10 | 7 / 10 |
| Feel | 6 / 10 | 8 / 10 |
| Tuning stability | 6 / 10 | 6 / 10 |
| Suits | Beginner | Beginner, Intermediate, Advanced, Professional |
A marked row is one where the two differ. A highlighted cell is the stronger figure where one can be judged objectively — which, for most accessory attributes, it cannot be. Empty cells are specifications the manufacturer does not publish, never estimates.
Which one should you buy?
Computed from our editorial scores for these two only. It is not a general ranking.
Best brightness
Belfort Phosphor Bronze AcousticHighest editorial brightness score of the 2 compared.
Best durability
D'Addario Pro-Arte Nylon ClassicalHighest editorial durability score of the 2 compared.
Best tuning stability
Belfort Phosphor Bronze AcousticHighest editorial tuning stability score of the 2 compared.
Best for beginners
D'Addario Pro-Arte Nylon ClassicalStrongest overall score among those we consider suitable for a first instrument.
Scores are Fretline editorial ratings on a 1-10 scale. They are our own assessment and are not supplied or endorsed by Amazon or by any manufacturer.
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