Pirastro Evah Pirazzi Gold 323421 is a professional individual C string for 4/4 viola, featuring a flexible steel rope core and tungsten winding. With medium tension of 6.5 kg, it is designed for violists seeking immediate bow response, clear articulation and powerful low-register sound.
Sound and playing characteristics
The C string forms the foundation of the viola's lowest register. Its construction influences the initial response, bow resistance and ease of articulation on low notes.
With article 323421, Pirastro uses a flexible steel rope core rather than a synthetic core. This construction is intended to provide a direct, responsive playing feel with reliable stability and clear articulation. The tungsten winding supplies the mass required for the low C while maintaining a practical string diameter.
Pirastro describes its steel-core Evah Pirazzi Gold alternative as combining brilliance and strong projection with tonal warmth, avoiding excessive metallic harshness. Actual performance depends on the individual instrument and playing technique.
323421 or 425421 — which C string?
323421: steel rope core, tungsten winding and 6.5 kg tension. Designed for a more immediate bow response.
425421: synthetic core, tungsten-silver winding and 5.6 kg tension. The standard C string for the synthetic-core Evah Pirazzi Gold set.
Set compatibility
Pirastro includes the 323421 C string in two different Evah Pirazzi Gold sets:
- 425091: steel A, synthetic-core D and G, and steel rope-core C string 323421.
- 323021: all-metal-core set featuring the same C string 323421.
This allows the rope-core C string to be used in either a mixed-core or an entirely metal-core configuration. When replacing only the C string, consider the differences in tension and playing feel.
Technical specifications
| Manufacturer |
Pirastro, Germany |
| Series |
Evah Pirazzi Gold |
| Article number |
323421 |
| Instrument |
4/4 viola |
| String |
C, fourth string |
| Core |
Steel rope core |
| Winding |
Tungsten |
| Tension |
Medium — 6.5 kg |
| End |
Ball End |
| Peg-end silk |
Violet |
| Tailpiece-end silk |
Gold / black |
| Version |
Envelope |
| Included in sets |
425091, 323021 |
| Quantity |
1 individual string |
Installation and care
Ensure the string runs correctly through the nut and bridge grooves. Bring it up to pitch gradually while monitoring the bridge position. After playing, remove rosin dust with a soft, dry cloth.
Please note: Pirastro 323421 is one individual viola C string, not a complete string set or a cello string. The synthetic-core C alternative has a different reference: 425421.