Grado Blue 1 Prestige Series Phono Cartridge
The difference between Reference and Prestige series, basically speaking, are stylus mass, tip mass, diamond shapes and size, different coils, different wires and compliance. The cost difference between the Reference and Prestige series are the closer tolerances, skilled technicians vs assembly line production, much higher parts cost and different design in the Reference series. The Prestige series of cartridges are designed for high output and excellent stability under severe use. A considerable tip mass reduction results in a frequency response to 55 kHz and beyond and tracking forces from 1-2 grams.
The Blue and Red models use a four piece OTL cantilever technology, standard oxygen free wire in the coils and Grado's specially designed elliptical diamond mounted on a brass bushing. The Red model is selected from the Blue production run and meet higher test specifications. Approximately 10% of the production run will meet these standards and become Red models.
Grado Blue & Red Technical Specifications:
Output at 1KHz 5CM/sec. 5mV
Cartridge Type: Moving Iron
Stylus Type: Specially designed elliptical diamond
Wire: Ultra-high purity long crystal copper
Frequency Response: 20~55,000 Hz
Recommended Load: 47 Kohm
Channel Separation at 1KHz 30
Imput Load 47K
Recommended Tracking Force 1.5
Inductance 45mH
Resistance 475
Compliance CUs 20
Stylus Replacement U=user U
Mounting S/P
Weight 5.5
Body: ABS plastic. Price today (August, 12, 2009: U$$ 110,00).
What are the customers saying?
"The cartridge is wonderfull, even better than my Denon dl103 at twice the price."-C.T. Australia
Grado Cartridges Superior Design & Precision Fabrication
All Grado cartridges now use a derivation of the moving iron principle which feature patented OPTIMIZED TRANSMISSION LINE cantilever technology, PIVOTED FIXED AXIAL STYLUS-GENERATOR MODULE, and Grado's FLUX-BRIDGER GENERATOR SYSTEM.
Grado Reference & Prestige Cartridge Literature PDF - See in the site www.needledoctor.com
