Pirastro Obligato Cello A String — Singing Top End, Gut-Like Warmth (Medium)

The Pirastro Obligato A string gives your cello a lyrical, vocal sheen while preserving the line’s trademark warm, rich sound. Built on a modern synthetic multifilament core, this A recreates much of the gut-like complexity of vintage set-ups but with the tuning stability and durability today’s performers expect. If you prefer a deep, dark voice on top—smooth and sophisticated rather than bright and brittle—this is the refined choice.

Detailed Characteristics
Expect a focused treble wrapped in warmth: a creamy, singing centre with complex overtones and an elegant presence that speaks easily in solo lines yet blends beautifully in section work. Compared with steel alternatives, Obligato’s A leans towards a mellow, rounded colour that keeps higher positions sweet and musical rather than glassy.

Playability & Feel
Under the left hand the string feels soft and forgiving, encouraging relaxed vibrato and fluid shifts. On the bow it offers quick response, clean note starts at lower bow pressure, and a wide dynamic range—from intimate pianissimo to confident mezzo-forte—without losing roundness. After a short settling-in period, intonation is stable and predictable across rehearsals and performances.

Technical Specifications (Medium only):

• String: A-String (Cello)

• Core: Synthetic multifilament

• Winding: Aluminium

• Tension: Medium

• End Type: Ball end (fine-tuner friendly)

• Instrument Size: 4/4 cello

Who Is This For?
Cellists seeking a professional cello A string that softens harshness while retaining clarity and projection—ideal for orchestral leaders, chamber players, and recitalists who favour a mellow, complex tone.

Why Choose the Obligato A?
Because it delivers the singing, human voice on top—rich tone, quick bow response, and reliable tuning stability—without the metallic bite of brighter A strings.