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A String D'Addario Prelude 4/4 for Violin (medium tension)
The only string in the Prelude range with an aluminium winding: article J812 4/4M, 4/4 size, medium gauge, 13.1 lb. Inside is the same solid pitch-stable steel core as the rest of the set, but the metal on top is different — aluminium rather than the nickel used on the D and G. That is not a detail: the mass of the winding decides how transparent or how thick the middle register turns out, and this A is deliberately the lighter one. In tension it is the tightest of the three wound strings, so crossing from the E to the A brings no drop in resistance. The end is a ball, as on every string in the range.

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Aluminium Where the Other Strings Wear Nickel
The A is the exception in this set: the D and G are nickel-wound, while here the metal is aluminium. Being lighter, it adds less mass at the same pitch, and the middle register comes out transparent rather than thick and gluey. You hear it most in cantabile playing on the second string: the line stays legible in the texture instead of blending into the D. The same aluminium keeps the string quick to respond — paired with a steel core, the A answers the bow without delay.
13.1 lb: The String the Left Hand Works Hardest
In first position the A carries a large share of everything a student plays — scales, etudes, slow pieces. It is therefore the string where the winding wears first under the fingertips and where perspiration collects. Its 13.1 lb is the highest tension among the wound strings of the set (against 11.7 on the D and 11.4 on the G), and it gives the fingers a clear point of purchase: the note lands without extra pressure. If a different resistance is wanted, the 4/4 A also comes as light (12.2 lb) and heavy (14.1 lb).
Replace One String Without Redoing the Set
Article J812 4/4M is precisely the A supplied in set J810 4/4M, which totals 54.8 lb, so the new string can go into an existing set with no worry about upsetting the balance. The construction inherits the range's main advantage: a steel core takes on no moisture, and the maker describes Prelude as "unaffected by temperature and humidity changes". The string arrives in a sealed pouch with corrosion protection.
Specifications
| Application | Single violin A string |
| Series | Prelude (violin) |
| Note | A, second string |
| Size | 4/4 |
| Gauge | Medium |
| Tension | 13.1 lb |
| Core | Solid steel core of pitch-stable alloy |
| Winding | Aluminium over steel core |
| End type | Ball end |
| Tension in other 4/4 gauges | Light — 12.2 lb, heavy — 14.1 lb |
| Supplied in set | J810 4/4M (54.8 lb total) |
| D'Addario Article | J812 4/4M |
| Included | 1 string in a sealed D'Addario pouch marked with the article number and protected against corrosion |
| Country of Manufacture | USA, New York ("Made in the USA at our New York production facility") |
What's Included
One A string in a sealed D'Addario pouch marked J812 4/4M. The pouch is airtight, so the winding does not oxidise before the string goes on the instrument.
Who It's For
A string for the pupil whose second-string winding has worn through under the fingers ahead of the rest of the set, for the teacher keeping the most-used strings in stock, and for the player who wants to refresh the middle register without replacing a full set.
Frequently Asked Questions
Why is the winding aluminium rather than nickel like the D and G?
That is how the Prelude set is built: the A is the only aluminium-wound string, the D and G are nickel-wound, and the E has no winding. Aluminium is lighter than nickel and adds less mass, so the middle register sounds more transparent.
Is this the same A supplied in set J810 4/4M?
Yes, article J812 4/4M is the string included in the J810 4/4M set, which totals 54.8 lb. It can be fitted to an existing set without upsetting its balance.
What is its tension compared with the other strings?
13.1 lb. That is the highest among the wound strings of the set: the D gives 11.7 lb and the G 11.4 lb, and only the unwound E sits higher at 18.6 lb.
What gauges are available?
Three in 4/4: light at 12.2 lb, medium at 13.1 lb and heavy at 14.1 lb. Fractional sizes are produced in medium only.
What end type does it have?
A ball end: the official D'Addario page lists ball-end construction for Prelude strings, and the A matches the rest of the set.
Are these genuine D'Addario strings?
Yes. SoundsGood supplies only genuine D'Addario product in official packaging marked with article numbers.
🚚 Shipping and Payment
🏆 SoundsGood — full warranty and service support
✅ Quality guarantee — genuine strings only
🏪 Pickup — Kyiv, free
🚚 Nova Poshta / Ukrposhta / Meest — 1–3 days
💳 Installments — PrivatBank, Monobank
🎻 Order the Prelude 4/4 A string at SoundsGood! ⚡