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D'ADDARIO PRO-ARTÉ VIOLIN SINGLE D STRING 4/4 Scale Medium Tension
The D is the character string: it carries most of the singing middle, and when it dulls the whole instrument starts to sound dry. This one is built as an aluminium winding over a nylon synthetic core, which gives a warm, rounded colour with no steel edge while keeping the middle transparent — aluminium does not sink it into dullness the way heavier metals can. Article J5603 4/4M covers 4/4 in medium gauge at 11.3 lb, ball-ended, with a 13 in (328 mm) playing length. It is the stock D of the J56 and J56W sets, so fitting it as a single restores the factory balance rather than altering it.
🏆 SoundsGood — genuine D'Addario strings only, in official packaging.
Aluminium Over Synthetic: Warmth Without Mud
Aluminium is the lightest of the usual winding metals for a D, which is exactly why it keeps the middle clean: the note is round rather than sluggish, and left-hand detail stays legible. The synthetic core beneath removes the steel edge that makes cheap sets unpopular with students. The maker sums the range up in one line — "warm, mellow tone" — and the D is where you hear it most clearly of all four strings.
11.3 lb: A Relaxed String Under the Finger
In the 4/4 medium set the D sits at 11.3 lb, a moderate figure in line with the range's intent: lower tension in the service of bow response and playability. In practice the string answers a light bow and does not need to be pressed into singing, and crossing from the A to the D asks for no change in arm weight. For a student still hunting an even tone, a D like this forgives more than a stiff one does.
An Exact Replacement for the Stock String
J5603 4/4M is the same D that ships in the J56 and J56W sets, so buying it singly restores exactly the configuration the set was designed around. It is ball-ended, so it fits a tailpiece with built-in fine tuners and a plain one alike. If you want a darker, denser D, the range also offers the silver-wound J5603S 4/4M at 11.7 lb — but in D'Addario's words it is "available as a single string only, and is not part of the J56 string set."
Specifications
| Application | Single violin D string |
| Series | D'Addario Pro-Arté (violin) |
| Note | D, third string |
| Size | 4/4 |
| Gauge | Medium |
| Tension | 11.3 lb |
| Core | Nylon synthetic core |
| Winding | Aluminium |
| End Type | Ball end |
| Playing Length | 13 in (328 mm) |
| Place in the Set | Stock D of the J56 4/4M and J56W 4/4M sets |
| Alternative D in the Range | J5603S 4/4M — silver wound, 11.7 lb; sold as a single only and not part of the J56 set |
| D'Addario Article | J5603 4/4M |
| Included | 1 string in official D'Addario packaging marked with the article number |
| Country of Manufacture | USA, New York ("Made in the USA at our New York production facility") |
What's Included
One D string in official D'Addario packaging marked J5603 4/4M. Nothing extra is needed to fit it: the string is ball-ended.
Who It's For
A string for the player whose D was the first of the set to fade, for the student who needs a warm and obedient middle instead of a steel edge, and for anyone assembling a Pro-Arté set string by string to suit their instrument.
Frequently Asked Questions
How does this D differ from the silver J5603S?
In winding and tension: J5603 is aluminium at 11.3 lb, J5603S is silver at 11.7 lb — a slightly denser, darker option. In D'Addario's words the silver D is "available as a single string only, and is not part of the J56 string set."
Can this D go into a set from another series?
Yes — the ball end suits standard tailpieces and fine tuners. Just bear the character in mind: this is a synthetic string at a lower tension, so alongside a steel set it will sound warmer and softer.
What is the tension in numbers?
11.3 lb in 4/4 medium. D'Addario's current pages state the gauge as "Medium" only; the numeric figures come from the range's tension tables and apply to the 4/4 size alone.
What other sizes is this D made in?
Dealer catalogues list the single Pro-Arté D in 4/4, 3/4, 1/2 and 1/8, while the range as a whole covers 4/4, 3/4, 1/2, 1/4, 1/8 and 1/16. No numeric tensions are published for sizes below 4/4.
Is it worth replacing the D alone?
Yes, if the other strings are still fresh: the D often tires before its neighbours because of constant work in the middle register. If the set has more than half a year of hard playing behind it, a full change to the J56 4/4M set makes more sense.
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 Pro-Arté D string at SoundsGood! ⚡