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E String D'Addario Zyex 4/4 for Violin (medium tension)
The E wears out first — it is thin, it lives closest to the bridge under the bow and it is the first to go dull and false in harmonics. This is the stock E of the Zyex sets, sold separately so you do not have to replace a whole rig for the sake of one string. Despite the name of the range there is no Zyex fibre inside it: this is solid tinned high carbon steel, unwound — a build that holds tension and delivers a defined, focused top. Article DZ311 4/4M: 4/4 size, medium gauge, ball end, 13 in (328 mm) playing length. The tinning is not cosmetic but protection for the steel core against moisture and hand perspiration, which is what kills an E fastest.

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Plain Steel: Attack and a Defined Top
The E in a Zyex set is deliberately not synthetic. A solid steel core with no winding gives a fast, precise attack: the note speaks the instant the bow touches it, and high positions and harmonics stay legible instead of smearing. Paired with the warm synthetic A, D and G, it produces a top that does not sink into the body of the set — exactly the clarity you lose when all four strings are made of soft material.
Tinning Against Sweat and Damp
An E rarely dies of playing; it dies of chemistry. Fingers, perspiration and humid air corrode the core and choke the sound long before the string loses its spring. The tinned surface on the high carbon steel is precisely a corrosion barrier, and in practice that converts into longer life for the string that already burns through faster than the other three. This is why a single E is the most frequent purchase between full restrings.
Ball End and 328 mm: Fits Without Modification
The string ends in a ball and measures 13 in (328 mm) of playing length for the standard 4/4 scale, so it drops into any tailpiece or fine tuner made for ball ends with no adapters and no fitting. The most direct use is replacing a worn E in your own Zyex set instead of paying for a full one. The second, equally practical use is putting a steel E on top of a different 4/4 synthetic set when the top needs more clarity and attack.
Specifications
| Application | Single violin E string |
| Series | Zyex (violin) |
| Note | E, first string |
| Size | 4/4 |
| Gauge | Medium |
| Tension | Medium; D'Addario publishes no numeric tensions for orchestral strings |
| Core | Solid tinned high carbon steel; the Zyex synthetic fibre is not used in this string |
| Winding | None — plain steel |
| End type | Ball end |
| Playing length | 13 in (328 mm), 4/4 scale |
| Place in the set | Stock E of the Zyex 4/4 medium sets (DZ310A 4/4M and DZ310S 4/4M) |
| Other singles in the range | DZ312 (A), DZ313 (D), DZ314 (G) |
| D'Addario Article | DZ311 4/4M |
| Included | 1 E string in a D'Addario pack marked with the article number |
| Country of Manufacture | USA, New York ("All D'Addario strings are designed, engineered and manufactured in the USA") |
What's Included
One E string in a D'Addario sleeve marked with article DZ311 4/4M. This is a single string rather than a set: A, D and G are bought separately or as part of the full set.
Who It's For
A string for the Zyex owner whose E wore out ahead of the rest, for the player whose hands eat steel E strings for breakfast, and for anyone who wants a clear, attacking steel E on top of a soft 4/4 synthetic set.
Frequently Asked Questions
Why is the Zyex E steel rather than synthetic?
That is how the whole set is built: the Zyex synthetic fibre works in the A, D and G, while the top string is unwound tinned high carbon steel. It is the standard arrangement for synthetic sets — a thin steel E supplies the attack and clarity that synthetic material cannot give in the top register.
Will it work with a set from another series?
Yes. It is a standard 4/4 violin E with a ball end and 328 mm of playing length, so it fits any full-size violin and any brand of set, keeping its own steel character.
What is its tension in pounds?
D'Addario publishes no numeric tensions for orchestral strings, neither for sets nor for singles. What is stated is the gauge — medium, meaning the string is balanced with the rest of the medium Zyex strings.
Is this E available for smaller violins?
Yes, Zyex is produced in 4/4, 3/4, 1/2, 1/4, 1/8 and 1/16, all in medium gauge. This item is the 4/4 version; a smaller instrument needs the DZ311 of the matching size.
What are the article numbers of the other Zyex singles?
DZ312 is the A, DZ313 the D and DZ314 the G; the full 4/4 medium set is DZ310A 4/4M with an aluminium D or DZ310S 4/4M with a silver D.
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 Zyex E string at SoundsGood! ⚡