Slide Super Bronze 'Contact core' design acoustic strings

MATERIAL

Phosphor bronze

GAUGE

10 • 14 • 20w • 28w • 40w • 50w

TONE

BRIGHT

OUTPUT

MEDIUM
sb10 Rotosound Super Bronze contact core acoustic phosphor bronze guitar strings long life piano string design psd country gold flattop string

Super Bronze Acoustic Extra Light | 10-50

Pioneered by Rotosound in 1974, Super Bronze remains the choice for long sustain and brightness.

Applying our patented Piano String Design technology to 92/8 phosphor bronze windings offers unrivalled sustain and presence.

Core principles

James How, Rotosound’s founder, revolutionised the acoustic guitar string with his world acclaimed piano string contact core design.

Originally released under the Superwound name ‘Country Gold’, these strings employ a wrap wire that stops short of the ball end so that a section of the core wire is exposed and only the core wire comes into contact with the saddle. 

Superwound Catalogue Page Rotosound Contact Core Piano String Design

British quality

Manufactured in the UK to precise tolerances and using only the finest materials, you can rely on Rotosound acoustic strings for consistent tone and performance in every packet.

Superwound PSD Contact Core

Piano string design

Inspired by the construction of piano strings, Rotosound’s James How designed and patented the ‘Superwound’ string in 1974. Described on their launch as having “unequalled hi-fidelity range, selective harmonic control, longer sustain and extreme power”, this design is a classic example of Rotosound’s innovation.

Tension chart

note

Diameter

Tension

E

0.010″

13.44 lbs

B

0.014″

15.39 lbs

G

0.020″

23.78 lbs

D

0.028″

26.67 lbs

A

0.040″

25.46 lbs

E

0.050″

21.94 lbs

Hear them in action

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