The Grado iGrado headphones are very simple in design. The ear piece itself has an open back, which is guarded by a plastic grill. If you look through it, you can see the sound element. The other side of the ear piece is covered by a foam pad. The ear pieces are directly connected to the band, which is made out of the same black plastic they are. The band doesn't collapse, move, or bend in any way, but there is a silver tag at the top that says, 'iGrado.
|Sensitivity (at 1 kHz)||100 dB|
|Impedance (at 1 kHz)||32.0 Ohm|