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A String Pirastro Synoxa 4/4 for Violin
Synoxa is not warm all-round synthetic — it takes the opposite route: Pirastro calls the line nylon core strings with a "clear and very brilliant sound" and "easy response". This A is 4/4, medium gauge, aluminium winding, 5.7 kp of tension, article 413221. The maker adds two claims that matter more than timbre at a rehearsal: Synoxa strings "tune quickly" and are "insensitive to variations in temperature and humidity". This, in short, is a working string for the player who needs to be legible inside a dense ensemble rather than velvety in the shadows. Nylon gives a denser, more direct sound than multi-strand fibres — a defined attack with no overtone tail trailing behind it.
🏆 SoundsGood — genuine Pirastro strings only, handmade in Germany.
Nylon Has a Different Character From Multifilament
The Synoxa core is nylon, and the line sounds like it: Pirastro describes it as "clear and very brilliant" with "easy response". In playing terms that means a direct, tightly focused voice that does not need a heavy bow to emerge — the note reads immediately, even with fifteen other violins alongside. There is a second stated property too: Synoxa strings tune quickly, so a new A does not need pulling up through an entire first rehearsal.
5.7 kp Gives You Something to Push Against
For an A string, 5.7 kp is a substantial figure, and it feels like springiness: the finger meets resistance instead of sinking into the string. Players with a heavy bow arm gain the most from that — the string holds the centre of the sound under pressure and does not tip into rattle on accents. The factory Synoxa 413021 set uses the same figure, coming to 23.3 kp in total, so a single A drops in without tilting the balance.
One Gauge Means No Guessing
Pirastro states it outright: "Synoxa strings are available in medium gauge." There is no weich or stark in this line, so when you order the A you cannot order the wrong tension. Combine that with the stated insensitivity to temperature and humidity swings and the line becomes predictable in the best sense: one configuration, the same behaviour in a cold studio and a warm hall.
Specifications
| Purpose | Single violin string |
| Line | Synoxa |
| Note | A |
| Size | 4/4 (full) |
| Gauge | medium — the only gauge in the line |
| Core | Nylon |
| Winding | Aluminium |
| Tension | 5.7 kp |
| End | The Pirastro datasheet states the end type for E strings only; for A, D and G it is left blank |
| Other voices in the line | 310421 and 310521 (E, plain steel, 7.7 kp), 413321 (D, aluminium, 5.1 kp), 413421 (G, silver, 4.8 kp) |
| Sets containing this string | 413021 (ball-end E) and 413025 (loop-end E), 23.3 kp total |
| Pirastro article | 413221 |
| Included | 1 string in a branded Pirastro envelope marked with the article number |
| Country of Manufacture | Germany (handmade) |
What's Included
One A string in a branded Pirastro envelope printed with its article number and gauge. This is a single string rather than a set — E, D and G are ordered separately or as set 413021.
Who It's For
For the orchestral violinist who needs their line to read inside a dense section; for the advanced student moving off steel strings to synthetics and wanting clarity rather than blur; and for anyone assembling their own combination who wants a relatively firm aluminium-over-nylon A.
Frequently Asked Questions
What is the tension of this A string?
5.7 kp, medium gauge. It is the same tension as the A in the Synoxa 413021 and 413025 sets, whose total tension is 23.3 kp.
Is Synoxa made in another gauge?
No. Pirastro states plainly that Synoxa strings are available in medium gauge — there is no weich or stark variant in the line.
How does Synoxa differ from Pirastro's other synthetic lines?
In core material and character: this is nylon, and the maker describes the line as clear and very brilliant with easy response and quick tuning. It is a more direct, more sharply focused sound than the lines positioned as soft and warm.
Is this A ball end or loop end?
Pirastro fills in the end-type column of the line datasheet for E strings only; for A, D and G the type is not stated, so there is no official confirmation. Check the fitting on your own tailpiece before ordering.
Which D and G go with this A?
In the Synoxa line the D is aluminium-wound — article 413321 at 5.1 kp — and the G is silver-wound, 413421 at 4.8 kp. There is no silver D in this line. The E is plain steel: 310421 with a ball or 310521 with a loop, both 7.7 kp.
Are these genuine Pirastro strings?
Yes. SoundsGood supplies only genuine Pirastro product, handmade in Germany, in branded envelopes 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 Synoxa A string at SoundsGood! ⚡