modal30Desned for the purest sound, the Marantz Model 30 delivers in style. Master-tuned for reference sound quality Painstakingly developed over three years, the Model 30 took hundreds of hours of Marantz’s finest technicians to produceData from:Bell Aircraft since 1935 [7] Ship No.1 (cn 1) The orinal Bell 30, built with an open-frame tubular steel framework with an open cockpit and four widely splayed undercarriage legs