Bob Maresca had just returned from a product launch event in New York when he got the call. His boss and mentor, 83-year-old Amar Bose, had been rushed to Lahey Hospital in Burlington, Massachusetts, and they didn’t know whether he’d make it through the night. When Maresca got to the hospital, he found Vanu Bose sitting with his ailing father, whom everyone called Dr. Bose. The founder was unfamiliar with the products Maresca’s team had introduced to the press that day, the SoundLink Mini wireless speaker and QC20 in-ear noise-canceling headphones. After hearing Maresca’s enthusiastic description of the event, Dr. Bose said he wanted to see them. Maresca wasn’t quite sure how serious he was, but he promised to return at 6 a.m. to give him a demo, silently worrying it would be too late. The next morning the two younger men arrived at the hospital just hours before Bose died. Maresca brought with him a SoundLink Mini, a QC20 and an iPhone loaded with Bose’s favorite music. “He was just blown away with where the state of noise cancellation had come. He just had a huge smile on his face,” Maresca says of his old professor’s response to listening…