J & R Electronics redefines block party. The company is a leading electronics retailer with 10 specialty electronics shops in the same New York City block. The stores make up one retail megastore, J&R Music and Computer World, which measures more than 300,000 sq. ft. and is known for discounted prices and good customer service. It also operates J&R Express, an in-store shop at Macy's in Herald Square, and peddles products through its website. J & R's merchandise includes audio and video products, computers, cameras, software, office products, music, movies, and games. Co-owners Joe and Rachelle Friedman used their wedding money to finance the founding of J & R Electronics in 1971.