Audio Research 50th Anniversary Making The Music Glow Book features 18 Chapters, 14 Interviews, 25 Key Products profiles, definitive product listing. Duration of coverage: 1970-2020. 50 Years of History. Pagination: 220 Pages, 220+ in mono and full color photos. Dimensions: 12x12in/305x305mm, weight: 4lbs/1.8kg, MSRP: $150.00. First Edition Run: 2,000 copies.