Prod J4504
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Information
Information
Manufacturer Information
D'addario And Co
https://www.daddario.com
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D'Addario Europe Ltd
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A Re 4 string designed for demanding musicians
The D'Addario Pro-Arte J4504 is the fourth string (Re 4) with normal tension, designed as a direct replacement within the D'Addario Pro-Arte EJ45 set. It is also perfect if you like to customize your set (mixing tensions, targeted replacement after wear) while maintaining the Pro-Arte sonic DNA: a warm, balanced sound and consistent response under the fingers. Pro-Arte strings benefit from advanced quality control, including sorting and precision checks across the range, to ensure a stable experience both in rehearsal and on stage.
Technical specifications
| Type of cord attachment | Without |
| Category | Classical single string |
| Nbr of strings | 1 |
| Color | Grey |
| Brand | D'Addario |
| Series | Pro-Arte |
| Reference | J4504 |
| Instrument | classical guitar |
| Type | single string |
| String | 4th (Re 4) |
| Tension | normal ("Normal Tension") |
| Compatibility | perfect replacement for the 4th string of a D'Addario Pro-Arte EJ45 set (normal tension) |
| Material | nylon (multi-filament nylon core) with silver-plated copper winding (bass string) |
| Use | replacement or custom set creation |
| Manufactured in | USA |
Questions frequently asked
Is the J4504 compatible with the D'Addario Pro-Arte EJ45 string set?
This string corresponds to the replacement of the 4th string, tuned to D4, of the D'Addario Pro-Arte EJ45 set at normal tension.
What tension does this classical guitar D string have?
The J4504 has a normal tension. It can replace a worn string while maintaining the tension of the EJ45 set.
What materials make up this 4th string?
The core is made of multifilament nylon. The winding is silver-plated copper, typical of a classical guitar bass string construction.
Can this string be used alone to build a custom set?
It can be integrated into a custom set, especially to mix tensions. The J4504 is sold individually and corresponds to the 4th string D4.
How is the D'Addario Pro-Arte J4504 string tied?
The string has no ball end. It is designed for a classical guitar and made in the USA.



