As Pirastro’s range of strings is very comprehensive, use the string finder to narrow down your choice by selecting your instrument and the core material that you prefer and click on “search”.

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Perpetual Cello Strings



Our engineers were faced with the challenge of developing a string using ground-breaking construction and superior material composition, while creating the machines required to achieve this. Our musical intuition and expertise allowed us to realize this milestone in our developmental work.
We approached the field of violoncello strings from an entirely new perspective: being able to forget your surroundings and focus on playing is what inspires and comforts a cellist. Therefore the key parameters we had to meet were easy playability, long durability, and perfect string-to-string harmony.
This new idea laid the foundation for us to make changes to the materials and processing techniques so that the strings acquired a further tonal dimension. This new dimension opens up the instrument to its full tonal colors and grants musicians the technical freedom to fully focus on their play.
Perpetual strings are characterized by great flexibility and an extraordinary tonal spectrum: from a sweet, warm tone to sheer endless power – everything is possible. The sound is like a large house with plenty of room for individual design. At the same time the tone is focused and clear, the most delicate touches are instantly audible and the base warmth always present. The natural qualities and timbre of each cello are enhanced by the strings’ great dynamics and intensity.
During the development we concentrated on reducing the break-in time. Our technicians did an impressive amount of research and analysis to develop a device for measuring the settling-in time, so each individual string can be tuned and brought to pitch before dispatch. This enables the materials used in the string to adjust and settle which significantly reduces the break-in time.

Sound Chart

Choose your favorite string combination


The Perpetual Sound Chart is intended to help cellists find the ideal string set for their playing style and instrument. Additional strings such as Evah Pirazzi Gold and Passione Steel A & D were added in order to provide as many tonal variations as possible.



Edition Set

As a musician put it, the Perpetual Edition is the most power-packed set in our program. Strong and clear core sound on the G & C strings in combination with full and round sounding A & D.

Soloist Medium Set

The Perpetual Soloist is designed for the cellist who desires radiance and clarity on the G & C strings in combination with warm sounding A & D.

Medium Set

Designed to have the signature Pirastro warmth but with a stronger fundamental on the G & C strings in combination with clear and brilliant A & D.


Tailpiece Options

  • Perpetual strings are available in 4/4.

  • All strings have a ball-end.



A Soloist Weich/Medium/Strong

Thanks to their advanced technology these A-string options offer special features that many cellists will appreciate. The strings will reveal their very warm and round sound to the musician as soon as they are played for the first time, while remaining focused without any metallic sharpness. The Cello Perpetual A Soloist string is the warmest sounding in the PIRASTRO program.
We also offer the »Strong« version for a voluminous deep and very powerful sound with this impressive construction. If you are looking for a dark and velvety sounding string with low tension, the »Weich« version is certainly of particular interest.

C Edition Strong

This C string offers a very powerful and strong core sound along with a deep and wonderful warm tone. Its unique special construction results in an enhanced torsional stiffness and tuning stability with a very fast and direct bow response, making it the most
sonorous C in the Pirastro program.

G & C Cadenza

Utilizing the same core construction as the Perpetual Soloist, the Cadenza G & C strings were created to provide players with lower tensions to match their instruments and allow older cellos to open up and play freely.

Strings for ZMT

Cello Strings for ZMT: These are specialized, elongated C strings, custom made for ZMT.
If you are interested in these strings please contact us.

Discover why following musicians favor Perpetual:

Julius Berger, Mathias Beyer-Karlshøj, Hendrik Blumenroth, Claudio Bohórquez, Clive Greensmith, Mikayel Hakhnazaryan, Lynn Harrell †, Frans Helmerson, Mischa Maisky, Joel Noyes, Amit Peled, Alessio Pianelli, Erica Piccotti, Miriam Prandi, Evgeny Rumyantsev, Julian Schwarz, Jacob Shaw, Seth Parker Woods, Gerhard Zank, Jeffrey Zeigler

A Steel/Chrome Steel Mittel 4/4 17.5 333120
D Steel/Chrome Steel Mittel 4/4 13.8 333220
G Rope Core/Tungsten Mittel 4/4 14.0 333320
G Rope Core/Tungsten Stark 4/4 14.6 333330
C Rope Core/Tungsten Mittel 4/4 13.4 333420
C Rope Core/Tungsten Stark 4/4 13.8 333430
SET Mittel 4/4 333020
A Soloist Steel/Chrome Steel Weich 4/4 16.8 333170
A Soloist Steel/Chrome Steel Mittel 4/4 17.6 333180
A Soloist Steel/Chrome Steel Stark 4/4 18.5 333190
D Soloist Steel/Chrome Steel Mittel 4/4 14.0 333280
G Soloist Rope Core/Tungsten Mittel 4/4 13.9 333380
C Soloist Rope Core/Tungsten Mittel 4/4 13.4 333480
SET Soloist Mittel 4/4 333080
G Cadenza Rope Core/Tungsten 4/4 13.4 333310
C Cadenza Rope Core/Tungsten 4/4 12.8 333410
A Edition Steel/Chrome Steel 4/4 17.3 333150
D Edition Steel/Chrome Steel 4/4 13.7 333250
G Edition Rope Core/Tungsten 4/4 13.6 333350
C Edition Rope Core/Tungsten 4/4 13.2 333450
C Edition Rope Core/Tungsten Stark 4/4 13.8 333460
SET Edition 4/4 333050