🎻 Pirastro Flexocor — Professional Orchestra Double Bass Strings

String Set Pirastro Flexocor Solo 3/4 for Double Bass are professional orchestra strings with rope core technology for dark, deep sound.

🎵 Key Features

Series:	Flexocor
Manufacturer:	Pirastro, Німеччина 🇩🇪
Tuning:	Solo (F#-B-E-A) — solo tuning (one tone higher)
Size:	3/4
SKU:	Pirastro-341000

🎵 Sound Character

✔️ Dark, deep orchestral sound
✔️ Rope core for soft response
✔️ Excellent arco articulation

📋 Technical Specifications

String	Materials
Струна E:	Rope core, chrome winding
Струна A:	Rope core, chrome winding
Струна D:	Rope core, chrome winding
Струна G:	Rope core, chrome winding

📊 Complete Double Bass Strings Comparison

Series	Brand	Core	Sound Character	Playing Style	Level
Spirocore	Thomastik 🇦🇹	Spiral steel	Bright, long sustain	Jazz, Orchestra	Professional
Evah Pirazzi	Pirastro 🇩🇪	Synthetic	Powerful, projecting	Orchestra, Solo	Professional
Passione	Pirastro 🇩🇪	Gut	Warm, authentic	Classical, Baroque	Professional
Flexocor	Pirastro 🇩🇪	Rope core	Dark, deep	Orchestra	Professional
Belcanto	Thomastik 🇦🇹	Rope core	Operatic, singing	Orchestra	Professional
Superflexible	Thomastik 🇦🇹	Stranded steel	Flexible, universal	Orchestra, Jazz	Professional
Helicore	D'Addario 🇺🇸	Stranded steel	Warm, fast	Orchestra, Hybrid	Professional
Prelude	D'Addario 🇺🇸	Steel	Clear, stable	Learning	Student

🎵 Orchestra vs Solo Tuning — How to Choose?

Tuning	Notes	Application
Orchestra	E₁-A₁-D₂-G₂	Orchestral playing, jazz, chamber music
Solo	F#₁-B₁-E₂-A₂ (one tone higher)	Solo repertoire, concertos

👤 Who Are They For

🎯 Orchestra bassists
🎯 Classical professionals

🏭 About Manufacturer — Pirastro

Pirastro — legendary string manufacturer from Німеччина 🇩🇪, founded in 1798. For over 226 years, the company has been creating premium strings for the world's finest bassists.

❓ Frequently Asked Questions about Flexocor

What is the difference between Orchestra and Solo strings?

Orchestra — standard E-A-D-G tuning for orchestra and jazz. Solo — one tone higher (F#-B-E-A) for solo repertoire.

What is the most popular double bass size?

3/4 is the standard size for most musicians. 4/4 is rarely used.

How often should I change strings?

With intensive playing — every 6-12 months. With moderate playing — 1-2 years.

Are Flexocor suitable for jazz?

Flexocor is designed for classical music. For jazz, we recommend Spirocore.

How long does stabilization take?

Steel strings stabilize in 1-3 days. Synthetic — up to 1-2 weeks.

Can I mix strings from different brands?

Yes, this is common practice among professionals.

What rosin should I use?

We recommend specialized bass rosins: Pirastro Bass Rosin, Kolstein Bass Rosin, Pops' Bass Rosin.

Are these original Pirastro strings?

Yes, SoundsGood sells only 100% original products with official warranty.

🚚 Delivery and Warranty at SoundsGood

✅ 100% Original Pirastro Products
✅ Official Manufacturer Warranty
🚚 Free Delivery in Ukraine from 4000 UAH
📦 Same-day Shipping (orders before 3 PM)
💳 Installment Payment — Monobank, PrivatBank

🔧 String Installation Recommendations

✔️ Loosen old strings before removing to avoid bridge damage
✔️ Change strings one at a time — this maintains pressure on the top and bridge
✔️ Check bridge grooves — they should be smooth, without sharp edges
✔️ Use graphite lubricant in grooves for easy tuning
✔️ Wind evenly on the peg, without overlaps
✔️ Tune gradually — allow strings time to stretch

🛡️ Double Bass String Care

🎻 Wipe strings with a dry soft cloth after each playing session
🎻 Wash hands before playing — oils and dirt accelerate winding wear
🎻 Avoid sudden changes in temperature and humidity
🎻 Store instrument in a case during transport
🎻 Regularly check bridge and nut for wear
🎻 Replace strings every 6-12 months with regular playing

🎵 Double Bass Playing Styles

Style	Technique	Recommended Strings
Classical Orchestra	Predominantly arco	Flexocor, Belcanto, Permanent
Jazz	Predominantly pizzicato	Spirocore, Evah Pirazzi
Rockabilly/Slap	Slap bass, pizzicato	Gut strings, Spirocore Weich
Chamber Music	Arco + pizzicato	Passione, Evah Pirazzi Gold
Solo	Arco, high positions	Solo tuning strings

🎯 How to Choose the Right Double Bass Strings

Selecting the perfect strings for your double bass depends on several key factors. Here's a comprehensive guide to help you make the right choice:

1. Consider Your Playing Style

Classical/Orchestral: Look for strings with warm, dark tone and good bow response. Flexocor, Belcanto, and Permanent are excellent choices.
Jazz: Prioritize sustain and pizzicato response. Spirocore is the industry standard, offering bright tone and long sustain.
Hybrid (Arco + Pizzicato): Choose versatile strings like Evah Pirazzi or Helicore Hybrid that perform well with both techniques.

2. Orchestra vs Solo Tuning

Orchestra (E-A-D-G): Standard tuning for ensemble playing, jazz, and most situations.
Solo (F#-B-E-A): One whole step higher, designed for solo repertoire with enhanced projection.

3. String Core Types

Steel Core: Bright, stable, quick response. Best for: beginners, jazz pizzicato.
Synthetic Core: Warm, complex, gut-like. Best for: classical, chamber music.
Gut Core: Authentic, warm, complex overtones. Best for: baroque, traditional sound.

4. Tension Selection

Light/Soft/Weich: Easier playability, suitable for older instruments or players seeking comfort.
Medium/Mittel: Universal choice, balanced response and projection.
Heavy/Stark/Strong: Maximum projection and power, requires more bow pressure.

💬 What Professional Bassists Say

"The right strings can completely transform your instrument's voice. I always recommend experimenting with different brands and tensions to find your perfect match."

— Professional Orchestra Bassist

"For jazz, nothing beats the sustain and growl of a good set of steel-core strings. They just sing under your fingers."

— Jazz Bass Virtuoso

Rate this item

€187

🚚 Delivery options

SoundsGood delivers orders all over Ukraine. Choose the most convenient way to receive your instrument or pro audio gear.

Delivery to Nova Poshta branch

Delivery cost: according to Nova Poshta current tariffs.

You can calculate the approximate shipping cost using Nova Poshta delivery calculator .

You can track your parcel by waybill (TTN) number via Nova Poshta tracking page .

⚠️ Important: when paying in cash for an amount over 5000 UAH, you must have your Ukrainian ID/passport with you (according to the Law of Ukraine No. 361-IX).

Courier delivery (Nova Poshta to your address)

Delivery cost: according to Nova Poshta tariffs including door-to-door service.

You can calculate the approximate shipping cost using Nova Poshta delivery calculator .

You can track your order by waybill (TTN) number via Nova Poshta tracking page .

⚠️ Important: when paying in cash for an amount over 5000 UAH, you must have your Ukrainian ID/passport with you (according to the Law of Ukraine No. 361-IX).

🎉 Free delivery with Nova Poshta

We cover the delivery cost when all of the following conditions are met:

💳 Online payment — full prepayment by bank card on the website
💰 Order amount from 5000 UAH
❌ The offer does not apply to sale items, orders with promo codes or items marked as “On order”
⚠️ Not valid for installment payments or cash-on-delivery (COD) payments

📦 Items with status “On order”

Please note:

💳 Such items can be ordered only with 100% online prepayment
✅ The order is processed by our manager only after the payment is received
⏳ Estimated delivery time: from 7 to 30 days (depends on the supplier and stock availability)

You can always check the approximate delivery time with our manager.

🏪 In-store pick-up at SoundsGood (Kyiv)

📍 Store address: Kyiv, Olzhycha St. 15 (Dorohozhychi metro station)

🕐 Store opening hours:

Mon–Fri: 11:00–18:00

Sat–Sun: closed

Before visiting, we recommend checking the item’s availability in stock by phone or via the contact form on our website.

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💳 Payment Methods

Choose the most convenient way to pay for your order at SoundsGood

🏪

Cash in the store

Pay in cash directly in our store when you pick up your order. Fast and easy!

No additional fees
Instant order pick-up
Possibility to check the instrument before purchase

💳

Bank card in the store

Pay by bank card via POS terminal at the store. We accept Visa and MasterCard.

No extra commission from the store
Secure payment
Instant receipt

💵

Cash on delivery (Nova Poshta)

Pay in cash when you receive your parcel at the Nova Poshta branch (cash-on-delivery / money transfer service).

Nova Poshta commission: 2% of the amount + 20 UAH
Payment upon receipt of the parcel
Delivery cost is paid separately according to Nova Poshta tariffs

🌐

Online payment (Visa / MasterCard)

At checkout, select “Pay by card on the website”. After confirming your order, you will be redirected to the payment page.

Secure payment via a protected payment gateway
Instant confirmation of payment
No additional fee from the store

🟢

PrivatBank installments

Installment plan from PrivatBank for 2–24 months, without overpayments and without income certificates, available for PrivatBank cardholders.

No overpayments or hidden fees
Term from 2 to 24 months
Quick online approval

⚫

monobank installments

Interest-free installments from monobank that allow you to split the payment into convenient monthly parts. Available for monobank cardholders with a credit limit.

0% installments without commissions
Minimum amount from 1 UAH
First payment on the day of purchase
Confirmation in the mobile app in about 1 minute

🏦

Bank transfer / IBAN (any bank)

You will receive an invoice with IBAN details to your email or Viber after we confirm availability and the final price of your order.

Payment from any Ukrainian bank
The payer’s name must match the recipient of the parcel
We recommend paying on the same day you receive the invoice

📄

Invoice with 20% VAT

Official invoice with 20% VAT from our LLC for companies and private entrepreneurs (FOP).

Suitable for legal entities and private entrepreneurs
Full package of accounting documents
Perfect for tenders and official procurement

Please note:

💳 Such items are processed only after 100% prepayment online.

✅ The order is forwarded to a manager only after full payment is received.

⏳ Estimated delivery time: from 7 to 30 days (depending on the supplier and stock availability).

Thank you for your understanding and trust in SoundsGood!

Important information about payments

⚡ Fast processing

Orders paid online are processed with priority and are usually shipped within 1–2 business days.

🔒 Payment security

All online payments are processed via secure payment systems using SSL encryption.

📧 Confirmation

After successful payment, you will receive an electronic receipt and order confirmation to your email address.

💬 Support

If you have any questions regarding payment or invoices, please contact our support team — we are always happy to help.

🎵 Warranty at SoundsGood

We sell only official products with manufacturer’s warranty. Our warranty terms comply with the Law of Ukraine “On Consumer Rights Protection”.

What our warranty is based on

“SoundsGood — a store of musical instruments and professional lighting & sound equipment” offers only official products covered by the warranty of the manufacturer and/or authorised importer in Ukraine.

✅ Our warranty principles

All terms are aligned with the current Law of Ukraine “On Consumer Rights Protection” and government regulations regarding warranty repair of technically complex consumer products.

Which musical products are covered

The warranty applies to all musical and professional products that have a factory serial number and/or an official warranty document:

🎻

Acoustic instruments

Violins, violas, cellos, double basses, wind instruments (saxophones, clarinets, flutes, trumpets, trombones), guitars, ukuleles, drum sets, percussion.

🎹

Electronic instruments

Digital pianos and synthesizers, electric guitars, bass guitars, effect processors, electronic drums.

🎚️

Professional audio equipment

Mixers, power amplifiers, PA systems, studio monitors, microphones, audio interfaces, studio processors, DJ controllers.

💡

Lighting equipment

Moving heads, effect lights, spotlights, fog/haze machines, controllers, DMX equipment.

📋 Important to know

The exact warranty period is set by the manufacturer/importer and is indicated on the product page on our website, in the warranty card and in the sales document (invoice / receipt).

Warranty for acoustic musical instruments

🎻 Bowed string instruments

Violin, viola, cello, double bass

✅ What is considered a warranty case:

Factory defects of the body (open seams, defective glued joints).
Structural defects of the neck, pegs, fingerboard.
Defects of tailpiece, pegs, fine tuners or mechanics under normal use.

❌ What is not considered a warranty case:

Cracks and deformation caused by incorrect humidity/temperature conditions.
Natural wear of strings, rosin and bow hair.
Scratches, dents and lacquer chips caused by use or transportation.

🎺 Wind instruments

✅ Warranty covers:

Body defects (solder joints, material cracks under normal use).
Mechanical problems caused by manufacturing defects.
Defects of valves, keys or mechanisms within the warranty period.

❌ Not covered by warranty:

Natural wear of pads, corks and springs.
Corrosion due to condensation and lack of drying after playing.
Damage caused by attempts of self-repair or non-authorised service.

Warranty for electronic instruments and pro audio

These products are classified as technically complex consumer goods. For them, the law provides a special procedure for warranty repair and possible replacement.

📦 This category includes:

Digital pianos, synthesizers, electronic drum kits.
Power amplifiers, mixers, recorders, audio interfaces, effect processors.
PA systems (including active), subwoofers, studio monitors.
Lighting fixtures, controllers, fog/haze machines.
DJ controllers, CD/media players.

✅ Warranty applies to:

Failure of electronic modules when properly connected to the mains.
Factory defects of circuit boards, displays, encoders, faders and connectors.

❌ Warranty does not apply to:

Damage caused by power surges, incorrect phase or missing ground.
Damage due to liquid spills or foreign objects inside the device.
Burnt speakers caused by prolonged overloading or clipping.

Accessories and consumables

A separate category is consumables with a naturally limited lifespan:

Strings for all types of instruments.
Reeds and reed blanks.
Drum heads, sticks and brushes.
Cables, connectors and adapters.
Care products (oils, sprays, wipes, swabs, sponges).

⚠️ Please note

Such products usually do not have a long warranty period, but we take responsibility for obvious factory defects revealed at first use.

Items not returnable for hygiene reasons

At SoundsGood, for hygiene reasons, the following items of proper quality are generally non-returnable and non-exchangeable:

🚫 Personal-use items:

Mouthpieces for wind instruments (saxophone, clarinet, trumpet, etc.).
Mutes for brass and woodwind instruments.
Violin chin rests.
Opened care products (if the seal/protective packaging is broken).

Return and exchange of goods in proper condition (14 days)

According to the law, the customer has the right to exchange or return goods of proper quality within 14 calendar days, provided they have not been used and the commercial appearance is preserved.

✅ Return conditions:

The instrument has no signs of use (scratches, scuffs, dents).
Electronic devices have no traces of installation or self-repair, protective films are preserved.
Original packaging is preserved in a condition suitable for resale.
A sales document (invoice/receipt) is provided.

Warranty repair: terms and procedure

The seller is obliged to eliminate defects within 14 days from the date of the claim, unless another period is agreed with the customer in writing.

Contact us

Get in touch with our sales manager or SoundsGood Services department.

Documents

Provide the product, invoice/receipt and, if available, the warranty card.

Diagnostics

We perform diagnostics in our own or an authorised service centre.

Solution

Free repair, product replacement or refund (in accordance with the law).

⏱️ Important note

During the repair, the warranty period is extended. If the defect is significant or cannot be eliminated, you are entitled to a replacement product or a refund in line with the Law of Ukraine “On Consumer Rights Protection”.

Cases when the warranty does not apply

The warranty does not apply in the following cases:

❌ Typical reasons for warranty denial:

Mechanical damage caused by drops, impacts or improper transportation.
Traces of liquid ingress (coffee, water, alcohol, condensation).
Unauthorised intervention: soldering, circuit modifications, unsuccessful “tuning”.
Improper storage (humidity/temperature violations).
Burnt speakers due to excessive signal level and overloading.
Damage from aggressive cleaning agents or improper care.

🔍 Determining the warranty case

In all disputed cases we rely on the official conclusion of an authorised service centre of the brand whose product has been purchased.

What we do “beyond the law” for musicians

In addition to the legally required warranty, SoundsGood offers extra service benefits:

Pre-sale inspection and basic setup of instruments.
Consultation with a luthier or wind-instrument technician when choosing an instrument.
Extended warranty or special service conditions for selected brands.
Professional support from our team of musicians.

💚 Our promise

All additional options will always be clearly stated in the product description. They never limit your statutory consumer rights — they only add more comfort and protection on top. We are on your side!

📞 Any questions about warranty?

Our team is always ready to help you with any warranty or service-related questions.

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