What is the American guitar manufacturer headquartered in Maryland founded in 1985 that endorsed Rian Adkinson?
Rian Adkinson:  Adkinson is a PRS endorsed artist and is known for using the S2 Mira Antique White and the S2 Custom 22 SH. PRS Guitars: PRS Guitars (also known as Paul Reed Smith Guitars) is an American guitar manufacturer headquartered in Stevensville, Maryland, founded by luthier Paul Reed Smith in 1985.
PRS Guitars