Thomastik-InfeldRated 4.8 out of 5 from 4 reviews

Thomastik-Infeld Spirocore Orchestra Double Bass Single D-String Number S37 4-4 Scale Medium Tension Chrome Wound

Why you'll like it

  • Effortless Playability — Flexible multi-wire spiral rope core reduces string inertia for smooth fingering and responsive bowing or plucking.
  • Superior Tone — Chrome winding delivers a brilliant top register alongside a powerful, deep fundamental bottom with a signature growl.
  • Exceptional Sustain — Advanced core construction ensures a long period of musical vibration and robust projection for diverse musical genres.
  • Reliable Stability — Medium tension design provides dependable tuning accuracy and long-lasting durability for professional orchestral players.

Product details

Description

Experience exceptional projection and musical resonance with the authentic USA-imported Thomastik-Infeld Spirocore Orchestra Double Bass Single D-String, Number S37. Designed specifically for full-size 4-4 scale double basses with a vibrating string length up to 1100 mm, this string features an advanced multi-wire spiral rope core combined with durable chrome winding.

It delivers a balanced medium tension of 32.0 kilograms, making it remarkably responsive for both traditional arco bowing and energetic pizzicato plucking. Musicians praise its ability to produce a muscular tone, clear top register, and a rich, powerful fundamental bottom complete with a signature growl.

Whether you play in a symphony orchestra, jazz ensemble, or blues band, this professional-grade string offers stable tuning, minimal inertia, and extended longevity to support your most demanding performances.

How to use

Install the D-string onto a compatible 4-4 scale double bass peg and tailpiece, tune carefully to orchestral pitch, and adjust bridge placement as needed.

Ingredients

Multi-wire spiral rope alloy steel core with chrome outer winding.

As printed by the brand. Check the pack label if you have an allergy.

Specifications

BrandThomastik-Infeld
EAN9003918102270
Ships fromUSA (sourced directly), checked in Navi Mumbai
Sold byDropy.in

Ratings & reviews

From our customers

4.84 reviews
Used this product?Your review helps other shoppers choose.
Write a reviewThomastik-Infeld Spirocore Orchestra Double Bass Single D-String Number S37 4-4 Scale Medium Tension Chrome Wound
Filter reviews4 reviews

Top reviews first: highest rated, with photos first

  • Amitabh S.
    5 ★

    amazing projection

    saw it online and ordered right away for my 4-4 double bass. woah, the growl and fundamental bottom is just insane. brilliant piece of gear.

  • Swapnil K.
    5 ★

    ekdum mast ahe

    khar sangu tar mala vatla navta khup chan asel pan baghun ghetla. sound khup muscular yetoy arco ani pizz dono madhe changla response deto. khup khush ahe mi ya quality mule.

  • Ananya M.
    5 ★

    first time trying this brand

    Was hesitant to switch brands, but this steel core string surprised me. The tension feels very balanced and it gives a really clear top register under the bow. Tuning stays quite stable even after heavy playing sessions.

  • Rohan M.
    4 ★

    good string for travel bag

    packing was thoda loose when it arrived, but string is safe. easy to keep in my gig bag as a spare for traveling to shows. sounds pretty crisp when plucked. volume is solid during rehearsals. packaging could be better though.

FAQs

What instrument size is the Thomastik-Infeld S37 string designed for?

The Thomastik-Infeld S37 is engineered specifically for full-size 4-4 scale double basses with a vibrating string length of up to 1100 mm.

Is this string suitable for both bowing and plucking?

Yes, the multi-wire spiral core construction makes this string equally effective and highly responsive for both arco bowing and pizzicato plucking styles.

What core material is used in Spirocore double bass strings?

Spirocore strings utilize an ultra-flexible multi-wire spiral rope steel core that provides superior sustain and reduced playing inertia.

Are these double bass strings authentic and imported from the USA?

Yes, this product is 100% authentic and directly sourced from the USA by Dropy India to ensure genuine quality for musicians.

What is the tension rating for the S37 D-string?

The S37 D-string features a medium tension rating of 32.0 kilograms or 70.5 pounds, offering optimal balance and projection.

How long will delivery take?

Most orders arrive in 15–20 days: we source each product directly from the USA, check it at our Navi Mumbai warehouse and pack it on video. Items marked Dropy Express ship from our India warehouse and arrive in 3–5 days.

Is cash on delivery available?

Full cash on delivery is available all over India on Dropy Express items. For other orders from ₹2,499 to ₹15,000 you can use Partial COD: pay 25% online now and the rest in cash on delivery.

Are your products genuine?

Yes. Every product is 100% authentic, sourced directly from the USA, quality-checked and packed on video at our Navi Mumbai warehouse.

What if my order arrives damaged or wrong?

Write to us at [email protected] as soon as it arrives. Damaged, wrong or not as described, our Buyer Protection gives you a full refund. The details are in our Return, Refund & Cancellation Policy.

Is delivery free?

Delivery is free on orders from ₹1,499. Below that a ₹79 delivery fee applies.