Question: What Armenian-founded manufacturer based in Massachusetts makes James Riley Breckenridge's cymbals?

Context paragraphs:
Soultone Cymbals: Soultone Cymbals, commonly known as Soultone, is a cymbal manufacturer based in Los Angeles, California.  It was founded in 2003 by Iki Levy, after struggling to address frustrations with the major cymbal manufacturers over quality issues.  Originally, as the proprietor of the Los Angeles drum specialty shop, The Drum Connection, Iki put his first Soultone models on the showroom floor with acoustic drums, so that customers could demo them as opposed to hanging them on a display.

Sufferings in Africa: Sufferings in Africa is an 1817 memoir by James Riley.  The memoir relates how Riley and his crew were captured in Africa after being shipwrecked in 1815.  Riley was the Captain of the American merchant ship "Commerce".  He led his crew through the Sahara Desert after they were shipwrecked off the coast of Western Sahara in August 1815.  The book was published in 1817 and was originally titled "Authentic Narrative of the Loss of the American Brig Commerce" by the "Late Master and Supercargo" James Riley, modernly republished as "Sufferings in Africa", and comes down to us today as a startling switch on the usual master-slave relationship.

Riley Breckenridge: James Riley Breckenridge (born January 5, 1975) is the drummer for Post-hardcore band Thrice.  He plays C & C Custom Drums, and uses Vic Firth drumsticks, Zildjian cymbals, Remo drumheads, with Drum Workshop hardware and pedals.

James Riley (cricketer): James Riley (11 December 1860 – 8 November 1937) was an English cricketer.  Riley was a right-handed batsman who bowled right-arm medium pace.  He was born at Kirkby-in-Ashfield, Nottinghamshire.

Martin Riley (basketball): Martin James Riley (born May 8, 1955) is a former Olympian as a member of the Canadian national basketball team.  Riley currently resides in Winnipeg Manitoba where he teaches a sports psychology class (healthy lifestyles) to high school students.  Also at the same school he teachers a sociology course and online law.

Martin Riley (footballer): Martin James Riley (born 5 December 1986) is an English footballer who plays as a defender for Halifax Town.

Skeletons on the Zahara: Skeletons on the Zahara: A True Story of Survival is a 2004 nonfiction book written by maritime historian Dean King.  It is based on two of the survivors' journals, primarily Captain James Riley's memoir "Sufferings in Africa".  To research the book, Dean King embarked on a National Geographic Society sponsored expedition to retrace the horrific journey of Riley and his crew across the Saharan ("Zahara") desert.  A screenplay adaptation was in 2010 reportedly being written by Roman Bennett for Independent studios.

Thomas J. Riley: Thomas James Riley (January 30, 1885 – March 15, 1928) was an American football player and coach and attorney.  He played football for the University of Michigan and coached football for the University of Maine (1910–1913) and Amherst College (1914–1916).

Pat Riley: Patrick James Riley (born March 20, 1945) is an American professional basketball executive, and a former coach and player in the National Basketball Association (NBA).  He has been the team president of the Miami Heat since 1995 and head coach in two separate tenures (1995 through 2003, and 2005 through 2008).  Regarded as one of the greatest NBA coaches of all time, Riley has served as the head coach of five championship teams.  He won four with the Los Angeles Lakers during their Showtime era in the 1980s, and one with the Heat in 2006.

Avedis Zildjian Company: The Avedis Zildjian Company, simply known as Zildjian , is an American-based cymbal manufacturer founded in Constantinople (present-day Istanbul, Turkey) by Armenian Avedis Zildjian in the 17th century.  It is now based in Norwell, Massachusetts.  Being nearly 400 years old, Zildjian is one of the oldest companies in the world.  Zildjian also sells drum-related accessories, such as drum sticks and cymbal carriers.  It is the largest cymbal manufacturer in the world.

Supporting paragraphs: Riley Breckenridge Avedis Zildjian Company
Answer: Avedis Zildjian Company