Pirastro Eudoxa Cello A String, Aluminum-Wound Gut, 4/4 - 21.5

Pirastro Eudoxa Cello A String

The Pirastro Eudoxa Cello A String is an aluminum-wound sheep gut string for full-size 4/4 cellos. It combines a ball end with three gauge choices: 20 1/2, 21, and 21 1/2 PM. These options let players select different tensions while retaining the same core material, winding, and attachment.

For cellists seeking a replacement gut A string, the range offers a choice around the standard 21 PM medium gauge. The 20 1/2 option provides the lowest listed tension, while 21 1/2 provides the highest. Choose by gauge when matching an existing setup or adjusting the tension of your cello's upper string.

Pirastro makes this series in Germany, forming, winding, and polishing the gut cores by hand. The construction supports a warm tonal character and responsive bowing. All three versions share the same 4/4 fit and ball-end connection, so selection centers on gauge and playing tension. Pirastro identifies 21 PM as the A-string gauge supplied in its medium Eudoxa set.

Key Features

• Sheep Gut Core: Traditional construction supports a warm, rounded tonal character.
• Aluminum Winding: Every gauge retains the same winding material for consistent construction across options.
• Three Gauge Choices: Select 20 1/2, 21, or 21 1/2 PM to suit your preferred tension.
• Ball-End Attachment: Fits a compatible ball-end tailpiece connection.
• Full-Size Fit: Designed for 4/4 cello applications.
• Handcrafted Production: Pirastro manufactures, winds, and polishes the gut core by hand.

Gauge Differences and Selection

• 20 1/2 PM: Thinnest option, with 28.7 lb playing tension; manufacturer part number 234130.
• 21 PM: Medium reference gauge, with 29.1 lb playing tension; manufacturer part number 234140.
• 21 1/2 PM: Thickest option, with 30 lb playing tension; manufacturer part number 234150.

PM denotes Pirastro's gauge scale. Higher values identify thicker strings. Playing tension describes the force on the instrument, rather than the string's physical weight.

Technical Specifications

• Brand: Pirastro
• Series: Eudoxa
• Product Type: Individual cello A string
• Instrument Size: 4/4
• Core Material: Sheep gut
• Winding Material: Aluminum
• Tailpiece End: Ball end
• Available Gauges: 20 1/2, 21, and 21 1/2 PM
• Gauge Increment: 1/2 PM
• Country of Manufacture: Germany