Thomastik JF34070 Nickel Flatwound Roundcore 70
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What you need to know
What you need to know
- Round and controlled tone : flatwound strings designed for a warm sound, ideal for jazz, blues, and clean tone playing.
- Ultra-smooth feel : flat winding reduces sliding noise and offers a consistent sensation under the fingers.
- Flexible and musical response : the steel round core (roundcore) promotes natural vibration and expressive playing.
- Refined finish : nickel alloy winding with a silk wrap for a softer feel and comfortable playability.
Manufacturer Information
Thomastik
https://www.thomastik-infeld.com
info@thomastik-infeld.com
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Safety manager:
GEWA music GmbH
Email: info@gewamusic.com
Address:
A flatwound set for vintage sound and a mellow attack
The Thomastik JF34070 Nickel Flat Wound Roundcore 70 strings are aimed at guitarists seeking a more "laid-back" sonic identity compared to classic roundwound strings. Thanks to the flat winding, the attack is softer, the highs less aggressive, and the midrange gains thickness, highlighting enriched chords, melodic lines, and phrases played with both pick and fingers. In the studio or on stage, this type of string is particularly appreciated for clean playing (less unwanted noise) and consistent feel along the entire neck.
The roundcore design (steel round core) contributes to a flexible feel and dynamic response, useful for nuanced phrasing and controlled vibrato work. The presence of a silk wrap adds a touch of comfort and contributes to the premium finish expected from "special" strings designed for demanding musicians.
Technical specifications
| Type of cord attachment | Loop end | Spun | flat |
| Category | Bass single string | Material | nickel |
| Draw | 70 | Color | Grey |
| Nbr of strings | 1 | ||
| Brand | Thomastik | Winding | nickel alloy, flat winding |
| Type | flat wound | Feature | silk wrap |
| Core | steel round core (roundcore) | ||
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Questions frequently asked
What sound does the flat nickel winding bring to this bass string?
The flat winding in nickel alloy produces a mellow attack, with less aggressive highs and thicker midrange. Finger noise caused by movement is also reduced.
Is the Thomastik JF34070 sold individually or as a full set?
This reference is sold individually and includes a single bass string with a gauge of 70.
What difference does the round core make on a flatwound string?
The steel round core contributes to a flexible feel and dynamic response. Phrasing as well as vibrato can be nuanced with greater control.
What type of attachment does this 70-gauge string have?
The attachment is of the loop type.
Is this string suitable for reducing fretboard noise while playing?
Thanks to the flat winding, the stringâs surface promotes cleaner playing with less finger noise. The silk wrap also contributes to a comfortable feel.
