Joan Sutherland, one of the most acclaimed sopranos of the 20th century, a singer of such power and range that she was crowned “La Stupenda,” died on Sunday at her home in Switzerland, near Montreux. She was 83.

Her death was confirmed by her close friend the mezzo-soprano Marilyn Horne.

It was Italy’s notoriously picky critics who dubbed the Australian-born Ms. Sutherland the Stupendous One after her Italian debut, in Venice in 1960. And for 40 years the name endured with opera lovers around the world. Her 1961 debut at the Metropolitan Opera in New York, in Donizetti’s “Lucia di Lammermoor,” generated so much excitement that standees began lining up at 7:30 that morning. Her singing of the Mad Scene drew a thunderous 12-minute ovation.

Ms. Sutherland’s singing was founded on astonishing technique. Her voice was evenly produced throughout an enormous range, from a low G to effortless flights above high C. She could spin lyrical phrases with elegant legato, subtle colorings and expressive nuances. Her sound was warm, vibrant and resonant, without any forcing. Indeed, her voice was so naturally large that at the start of her career Ms. Sutherland seemed destined to become a Wagnerian dramatic soprano.

Following her first professional performances, in 1948, during a decade of steady growth and intensive training, Ms. Sutherland developed incomparable facility for fast runs, elaborate roulades and impeccable trills. She did not compromise the passagework, as many do, by glossing over scurrying runs, but sang almost every note fully.