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A square image with a black background, a large red circle in the center, and the words “OBLIGATO CELLO” in white capital letters above the circle.

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Pirastro Obligato A string

Pirastro

$46.23

The Obligato A string for 4/4 cellos features a solid steel core wound with chrome steel, designed for brightness, brilliance, and fast response. This string offers superior tuning stability and is resistant to environmental changes, making it a reliable choice for frequent performers. Its strong core and quick articulation make it ideal for solo work, first-position melodies, and pieces requiring crisp attack and clarity. When paired with Obligato’s synthetic lower strings, it creates a beautifully balanced set that blends the A string’s brightness with the warmth of the G and C.

Available Sizes: 4/4
String Selection: A String

Description

The Obligato A string for cello is engineered with a high-tensile steel core and chrome steel winding, offering players a precise, bright tone and immediate bow response. Designed to anchor the upper register of the cello, this string provides a laser-focused sound that is ideal for solo passages, first-position melodies, and expressive phrasing where clarity and projection are key.

Unlike many steel-core A strings, the Obligato balances brightness with tonal warmth, avoiding a harsh edge while still delivering brilliance and articulation. Its reliable pitch stability makes it especially valuable in performance settings where quick transitions and tuning sensitivity are critical—whether on stage, in the studio, or during extended rehearsal sessions.

This A string is also fully compatible with a wide range of D, G, and C string options, but it shines particularly when paired with the Obligato synthetic-core lower strings for a cohesive tonal palette. It offers a clean, singing tone under high bow pressure while maintaining expressive flexibility for softer dynamics.

Obligato strings are favored by cellists who want precision without sacrificing musicality, and this A string is no exception. It’s responsive, resilient, and provides a confident foundation for the cello’s top voice, allowing the player’s articulation, vibrato, and character to shine through with minimal effort.

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