D'ADDARIO 3/4 HELICORE HYBRID BASS STRING SET SCALE MEDIUM TENSION
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Manufacturer Information
D'addario And Co
https://www.daddario.com
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D'Addario Europe Ltd
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Helicore: a modern reference for versatile double bassists
With the Helicore series, D'Addario developed strings designed to meet the demands of musicians who alternate contexts: orchestral work, ensemble playing, studio, stage. This Hybrid version positions itself as a particularly coherent choice when seeking a string capable of performing well both arco and pizzicato, without extreme specialization.
For what use and level?
This D'Addario Helicore Hybrid set is aimed at advanced beginners, intermediate, and experienced double bassists who want a reliable, stable, and pleasant string to play daily. The Medium tension is very suitable for long sessions: it offers good responsiveness while remaining flexible enough to facilitate intonation, shifting, and articulation.
Regarding styles, the hybrid orientation makes it relevant for symphonic and orchestral playing (clean attack and bow response), while maintaining appreciable sustain and presence for jazz, bluegrass, and contemporary music primarily played pizzicato.
Sound
Thanks to their multi-strand steel core, these strings deliver a sound described as warm, with clear definition and a homogeneous response across the entire set. In pizzicato, they provide balanced sustain and a clear attack, ideal for laying down a stable and articulated bass line. With the bow, the string responds with good grip and a feeling of control, which facilitates dynamics and sound consistency, even when shifting registers.
Recommended Compatible Accessories
To preserve lifespan and tuning stability, these strings pair very well with a high-quality double bass rosin and a chromatic tuner. For other accessories (case, bridge, tailpiece adjusters, tailpiece), compatibility strongly depends on your instrument and its setup: it is best to check dimensions and configuration before any modification.
Technical specifications
| Format | 3/4 |
| Tension | Medium |
| Type of cord attachment | Ball end |
| Category | double bass |
| Nbr of strings | 4 |
| Size | 3/4 |
| Compatible neck length | 1060 mm (41 3/4") |
| Type | hybrid strings (balance between pizzicato and bow) |
| Core | multi-strand steel (multi-filaments) |
| Playability | easy under the left hand thanks to core construction |
| Sound character | warm and clear sound |
| Pizzicato | good sustain balance |
| Bow | good response |
| Recommended styles | symphonic, jazz, bluegrass |
| Design and manufacturing | United States |
| Quality control | strict controls according to the manufacturer |
Questions frequently asked
Are D'Addario Helicore Hybrid 3/4 Medium strings suitable for a 3/4 double bass?
This set is designed in 3/4 size and includes 4 strings intended for the double bass.
What type of string attachment is used on these double bass strings?
Each string uses a ball-end attachment. Compatibility with the tailpiece therefore depends on the instrument's configuration.
Does the Helicore Hybrid set respond well to the bow?
The multi-strand steel core promotes good bow response and consistent grip. This design facilitates dynamic control. Using double bass rosin is recommended to maintain bow response.
What is the pizzicato sound of the Helicore Hybrid Medium strings?
The Medium tension provides a clear attack and balanced sustain in pizzicato. The tone is described as warm, with clear definition.
Are these strings suitable for jazz and symphonic playing?
Their hybrid design balances pizzicato and arco playing, suitable for symphonic, jazz, and bluegrass applications.



