D'Addario (Da-dairy-oh)[1] is a family-owned and operated American multinational company that specializes in musical instrument accessories, headquartered in Farmingdale, Long Island, New York.

Today, the company conducts business worldwide, with offices on four continents including locations in Brooklyn, New York; Houston, Texas; Sun Valley, California; Newcastle upon Tyne, England; France, Germany, Australia and China.

D'Addario manufactures 95 percent of its products in the United States, distributes to 120 countries, and serves more than 3,300 retailers and all major e-commerce sites.

The foundation works to identify, fund, and partner with grassroots, community-based organizations that improve outcomes for historically marginalized and impoverished children through immersive music education.

[11] In March 2020, after New York State required non-essential businesses to shut their doors due to the COVID-19 pandemic, the D'Addario Research & Development team worked alongside Chief Innovation Officer, Jim D'Addario to develop face shields with the mylar film used to produce Evans Drumheads' G2 heads.

In October 2020, D'Addario received a $341,000 grant from the New York State Government to expand face shield manufacturing operations.

In the early 1960s, John D'Addario, Sr., introduced a brighter-sounding, second-generation nickel-plated steel string, which became the industry standard for the next five decades.

Formulated, created and perfected in New York State, the new strings were redesigned to bend farther, sing louder, and stay in tune better.

XS features a thin film coating (1/10 the thickness of a human hair) that completely protects the wound strings from corrosion, without dampening the tone.

[23] In 2022, D’Addario introduced XS Electric strings, which included a reformulated nickel-plated steel wrap wire that provides a bright tone with increased output, bite, and sustain.

Some of the first products Jim D'Addario and the team designed included an Ergonomic Peg Winder with a built-in string stretcher, as well as a line of instrument cables.

Inventor Arthur Pantoja sent an email to Jim discussing the development of a combination peg winder and string cutter.

He subsequently founded Evans Drumheads in 1957, running the company for a few years, making the heads by hand and personally selling them to professional drum shops along the West Coast of the United States.

To improve quality, the new team developed and patented a Low Temperature Forming (LTF) system to bend and shape drumhead collars.

Brochstein recruited Tat Kosaka in Japan to help him locate the factory in which they were made, and in 1957, he founded ProMark to begin selling drumsticks in the United States.

The black coating on the sticks gets tackier as the drummer's hands heat up and begin to sweat, essentially eliminating the need for conventional solutions.

Some early findings pointed to other industries using flame-tempering techniques to harden baseball bats and hammer and axe handles, as well as arrowheads.

One in-depth search turned out an ancient Japanese wood hardening and preservation method that originated in the 1700s: Shou Sugi Ban.

In addition to creating a unique aesthetic, the open flames crystalize trace amounts of tree sap resin that remains in each stick, which builds an "exterior armor".

The sale included Rico International's plantations in France and Argentina used to grow cane, which is then harvested, dried, sunned, processed into small sections, and ultimately machined into reeds.

With the acquisition, Jim D'Addario implemented sustainable plantation practices in the company's cane fields to develop digitally controlled diamond blades to make the final cut on the reeds.

[36] In 1905, Ladislav Kaplan emigrated to the United States from Germany and opened a violin-making and repair shop in New York City.

Suppliers at the time couldn’t produce spring-tempered high-carbon steel cables on machines meant to manufacture stranded copper wires for electrical conduction.

In 2017, D'Addario introduced Ascenté, a new synthetic core violin set designed for a wider tonal range and a more sophisticated palette of increased pitch stability, as well as to provide longevity and durability.

D'Addario had created professional-quality classical guitar strings, but the company wanted to reach out to new artists who were struggling to make a living.

In 2007, The D'Addario Foundation expanded its support of independent arts organizations, bringing immersive music construction and mentoring where it did not exist.

[56] In 2016, D'Addario teamed up with TerraCycle, an international up-cycling and recycling company that re-purposes waste into new, materials and products, creating the Playback program.

Playback’s goal is to facilitate 100 percent recycling and up-cycling of strings to minimize D'Addario's and the entire industry's impact.