Free Delivery. Free Griffin Smarttalk. Built on the same features as the SR60i, but utilizes a 4 conductor connecting cable & larger ear cushions, the result of which gives a more open stage. The SR80i provides an enhanced bass resonance, which enhances the overall detail. John Grado says he strove for the best sounding phones for the money, & with the glowing reviews the SR80i&0s have received, who can argue.