---
product_id: 1363707
title: "Thomastik-Infeld Bass Guitar Strings - Flatwound Bass Strings For a Rich and Warm Traditional Jazz Sound - Durable String Set Includes JF34043 JF34056 JF34070 JF34100 - Made in Vienna"
brand: "thomastik-infeld"
price: "23593 kr"
currency: ISK
in_stock: true
reviews_count: 11
category: "Thomastik Infeld"
url: https://www.desertcart.is/products/1363707-thomastik-infeld-bass-guitar-strings-flatwound-bass-strings-for-rich
store_origin: IS
region: Iceland
---

# Balanced medium gauges (.043-.100) Nickel flatwound for smooth jazz tone Durable silk inlay & steel core Thomastik-Infeld Bass Guitar Strings - Flatwound Bass Strings For a Rich and Warm Traditional Jazz Sound - Durable String Set Includes JF34043 JF34056 JF34070 JF34100 - Made in Vienna

**Brand:** thomastik-infeld
**Price:** 23593 kr
**Availability:** ✅ In Stock

## Summary

> 🎵 Elevate your bass game with the smoothest jazz strings in Vienna’s finest tradition!

## Quick Answers

- **What is this?** Thomastik-Infeld Bass Guitar Strings - Flatwound Bass Strings For a Rich and Warm Traditional Jazz Sound - Durable String Set Includes JF34043 JF34056 JF34070 JF34100 - Made in Vienna by thomastik-infeld
- **How much does it cost?** 23593 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/1363707-thomastik-infeld-bass-guitar-strings-flatwound-bass-strings-for-rich)

## Best For

- thomastik-infeld enthusiasts

## Why This Product

- Trusted thomastik-infeld brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Premium craftsmanship ensures your tone and feel stay pristine, gig after gig, year after year.
- • **Dynamic Flexibility:** Roundcore design offers bend-friendly tension for expressive vibrato and fluid playing.
- • **Legendary Jazz Warmth:** Experience the iconic Thomastik-Infeld Spirocore tone now on your electric bass.
- • **Consistent Balanced Feel:** Uniform tension across all four strings for flawless groove and control.
- • **Silky Smooth Playability:** Ribbon flatwound nickel wrap with silk inlay means effortless slides and zero finger noise.

## Overview

Thomastik-Infeld Bass Guitar Strings are premium flatwound nickel strings designed for electric bassists seeking the rich, warm tone of traditional jazz. Featuring a ribbon flatwound nickel alloy wrap, silk inlay, and a pliable steel roundcore, these strings deliver smooth playability, balanced medium gauges (.043-.100), and long-lasting durability. Crafted in Vienna, they offer consistent tension and superior clarity, making them the go-to choice for professional musicians demanding vintage warmth with modern flexibility.

## Description

Smooth, warm, and balanced. Jazz bass strings from Thomastik-Infeld offer you extended durability and high output. A highly flexible steel core gives these bass strings a balanced feeling and special character. The overall sound characteristics can be described as very close to the double bass. Nickel flatwound with a round core. 34" Scale. Gauges:.043 -.056 -.070 -.100.

Review: The best. - The very best bass strings you can buy. Excellent tone, perfect intonation, and they last for years. Low tension at pitch makes them easy to play. Thomastik-Infeld has been making strings for the most demanding musicians - orchestral string players - for over 100 years and it shows. I had a new bass coming, and I ordered these to make sure the new instrument would sound as good as it can.
Review: Tomastik Jazz Bass Flatwound Strings - I needed to get some flat wound strings for my MusicMan Big Al bass. I had just sold the Precision which had Fender flat wound strings, the Big Al still had the Ernie Ball round wound strings that it came with, ok strings but not for me. I checked around on the web and asked friends to find out what was recommended, I thought there might be something better than the Fender flats. Thomastik came up more than anything else so I got some. The Big Al has passive and active circuit options that allows you to dial in any kind of sound. I use a David Eden World Traveler combo that will reproduce anything the instrument delivers with clean power and control. I actually tried the new strings out with a couple of the Ernie Ball round wounds still left on to compare, before putting all of them on. The Thomastik flat wound strings have a full, singing tone that I hear in my head and want my bass to have. With the full tone one can achieve the bright tones that round wounds produce, the deep bassy tones for recording and stage and everything in between with no gaps. There is no change of tone when going from string to string and likewise with the sustain. Each string acts and plays like all the others. Since the Big Al also gets a wide variety of sounds, these strings are an excellent match. The smoothness of the strings are the best part. If you are playing for hours at a time, the Tomastiks will not fatigue your fingers or tear up the frets. Also, if you want to set the action low, these strings will not mind. If you just cannot get the sound you want from your strings (and you have a decent quality of an instrument) I would say give these strings a try. If you like round wound sound and your bass has an active circuit, you may be able to get by with these flats, otherwise Thomastik does produce round wound sets. I expect to get years of use from a set so the higher cost will balance out over the years. The only caveat from me is the G string broke off several times when making a right angle turn in the machine head, they are kid of soft. I ended up just using a figure S around the slot to get it started. Make sure you start off with enough length and to wind it properly down from the nut.

## Features

- The Thomastik-Infeld Experience: For decades, upright bassists have relied on Thomastik-Infeld’s iconic Spirocore strings for their rich sound. Now, electric bassists can experience that same legendary tone with these jazz flatwound guitar strings.
- Smooth Playability: Crafted with a true ribbon flatwound nickel alloy wrap and a silk inlay, these strings provide a smooth surface that feels incredible under your fingers. Say goodbye to finger noise and enjoy effortless slides and transitions.
- Unmatched Clarity: A highly pliable steel core enhances the fundamental tone, delivering a rich, warm, and well-balanced sound. Whether you're laying down groovy basslines or driving a mix with punchy low-end, these strings ensure superior definition.
- Dynamic Playing Styles: Unlike traditional flatwounds, the roundcore design of these strings offers enhanced flexibility, making bends, vibrato, and expressive playing natural. Enjoy consistent tension across all four strings for a balanced feel.
- Stands the Test of Time: Built with expert craftsmanship, this bass string set maintains their tone, feel, and playability. Whether you're performing on stage or recording in the studio, trust Thomastik-Infeld for long-lasting, reliable performance.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00162ZSW6 |
| Best Sellers Rank | #6,776 in Musical Instruments ( See Top 100 in Musical Instruments ) #38 in Bass Guitar Strings |
| Body Material | Nickel |
| Color Name | Natural |
| Customer Reviews | 4.8 4.8 out of 5 stars (685) |
| Date First Available | March 17, 2008 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 4 ounces |
| Item model number | JF344 |
| Material Type | Nickel |
| Number of Strings | 4 |
| Product Dimensions | 6 x 6 x 1 inches |
| Size | long scale 34" |
| String Gauge | Medium |
| String Material | Nickel Steel |

## Product Details

- **Brand:** Thomastik-Infeld
- **Color:** Natural
- **Instrument:** Bass Guitar
- **String Gauge:** Medium
- **String Material Type:** Nickel Steel

## Images

![Thomastik-Infeld Bass Guitar Strings - Flatwound Bass Strings For a Rich and Warm Traditional Jazz Sound - Durable String Set Includes JF34043 JF34056 JF34070 JF34100 - Made in Vienna - Image 1](https://m.media-amazon.com/images/I/81pRfuHWO2L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ The best.
*by J***R on September 2, 2025*

The very best bass strings you can buy. Excellent tone, perfect intonation, and they last for years. Low tension at pitch makes them easy to play. Thomastik-Infeld has been making strings for the most demanding musicians - orchestral string players - for over 100 years and it shows. I had a new bass coming, and I ordered these to make sure the new instrument would sound as good as it can.

### ⭐⭐⭐⭐⭐ Tomastik Jazz Bass Flatwound Strings
*by L***D on January 6, 2012*

I needed to get some flat wound strings for my MusicMan Big Al bass. I had just sold the Precision which had Fender flat wound strings, the Big Al still had the Ernie Ball round wound strings that it came with, ok strings but not for me. I checked around on the web and asked friends to find out what was recommended, I thought there might be something better than the Fender flats. Thomastik came up more than anything else so I got some. The Big Al has passive and active circuit options that allows you to dial in any kind of sound. I use a David Eden World Traveler combo that will reproduce anything the instrument delivers with clean power and control. I actually tried the new strings out with a couple of the Ernie Ball round wounds still left on to compare, before putting all of them on. The Thomastik flat wound strings have a full, singing tone that I hear in my head and want my bass to have. With the full tone one can achieve the bright tones that round wounds produce, the deep bassy tones for recording and stage and everything in between with no gaps. There is no change of tone when going from string to string and likewise with the sustain. Each string acts and plays like all the others. Since the Big Al also gets a wide variety of sounds, these strings are an excellent match. The smoothness of the strings are the best part. If you are playing for hours at a time, the Tomastiks will not fatigue your fingers or tear up the frets. Also, if you want to set the action low, these strings will not mind. If you just cannot get the sound you want from your strings (and you have a decent quality of an instrument) I would say give these strings a try. If you like round wound sound and your bass has an active circuit, you may be able to get by with these flats, otherwise Thomastik does produce round wound sets. I expect to get years of use from a set so the higher cost will balance out over the years. The only caveat from me is the G string broke off several times when making a right angle turn in the machine head, they are kid of soft. I ended up just using a figure S around the slot to get it started. Make sure you start off with enough length and to wind it properly down from the nut.

### ⭐⭐⭐⭐⭐ The “Rolls Royce” of Bass Strings — Carol Kaye Was Right
*by J***. on November 23, 2025*

After trying several flatwound sets over the years, the Thomastik-Infeld Jazz Flats (JF344) stand out as something very special. I still believe LaBellas are unbeatable for that classic Motown thump, but for almost everything else I’d choose these. They have a "singing" clarity that feels almost effortless—likely due to the lower tension which I normally don't like. The nickel wrap gives them a soft, silky texture that’s unlike any other flatwound I’ve tried. They’re incredibly comfortable but not flimsy. Carol Kaye called these the “Rolls Royce of bass strings,” and after playing them, I agree. Every time I pick up my Precision with JF344s, I’m inspired. Truly amazing strings.

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-05-30*