Grado SR80 Classic Series HeadphonesWhere It Begins for So Many The SR80 is the most recognized headphone in the history of Grado and remains the best selling model we have ever produced. For more than three decades it has introduced generations of listeners to the energy and immediacy of open back headphones. Many of todays audio reviewers, engineers, and company founders first discovered serious listening through an SR80. Within the Classic Series, elements once found in the SR125 and