Grado Platinum1 Reference Cartridges

The newly redesigned Platinum1 and Sonata1 have had their coil design reconfigured, and the effective moving mass of their generating system has been reduced by 17%. All this is hand-assembled within a machined, new processed, Australian Jarrah wood housing. The Platinum1 and Sonata1 models use a modified four piece OTL cantilever technology achieving a 10% tip mass reduction over the Prestige series and ultra-high purity long crystal (UHPLC) oxygen free copper wire in the coils. The Platinum model uses Grado's specially designed elliptical diamond mounted on a brass bushing, and the Sonata model uses Grado's specially designed nude elliptical diamond.

Frequency Response	10-60
Principal	MI
Channel Separation at 1KHz	40
Imput Load	47K
Output at 1KHz 5CM/sec.	5mV
Recommended Tracking Force	1.5
Stylus Type	E
Inductance	45mH
Resistance	475
Compliance CUs	20
Stylus Replacement F=Factory	F
Mounting	S
Weight	6.5