DESCRIPTION :

The Red Signature (Platinum) looks very much like the Red Signature. 

The similarities however, stop there.  The body of the Platinum model is made from aged Rosewood which gives it a darker color tone.  The greatest difference though, is inside. 

The coils of the Pro IV are made of 6N copper wire, painstakingly clad with a silver jacket. The magnets are made of the proprietary (and very expensive) Platinum alloy which accounts for the higher price. 

These powerful rare-earth magnets allow the cartridge to respond aptly to even the most subtle movements in the cantilever/stylus assembly resulting in the reproduction of delicate nuances in the music. 

However, output for the Platinum models is lower than the others (0.25mV vs 0.6mV) and a good MC phono-stage is recommended to demonstrate the cartridge’s true capabilities. 



Diamond cantilever supplement available for Platinum Series Koetsu cartridges.