Grado have made four major improvements to these cartridges.
They have optimized the size of the coils, cutting back on the number of turns, for sonic quality. They have developed a new process for potting the coils which helps control the resonance in the coils and lowers the noise even more than before.
Grado also have lowered the effective mass of the moving parts in the stylus by 17%, thus allowing for a quicker more accurate reproduction of the music. Finally, they have changed the wood enclosures from mahogany to jarrah, which is much harder and denser adding greater stability to the cartridge as a generating device. Of course, all this achieved while keeping that world famous Grado sound.
Frequency Response: 10-60
Channel Separation at 1KHz: 40
Imput Load: 47K
Output at 1KHz 5CM/sec.: 5mV
Recommended Tracking Force; 1.5
Stylus Type: E
Compliance CUs: 20
Stylus Replacement F=Factory: F