DS Audio Grand Master Phono Cartridge

DS Audio's flagship optical phono cartridge, engineered to bring analog sound to another level.   

The new Grand Master optical cartridge is optimized by implementing a new independent (dual mono) LED and photo-detector arrangement for the left and right channels. The cartridge output voltage has greatly increased from 40 mV to 70 mV, significantly more than traditional phono cartridges. With this dramatic increase in output, DS Audio's excellent signal to noise ratio has been furthered improved, resulting in an even lower noise floor and greater musical clarity. The new design of the Grand Master generator further reduces crosstalk, greatly improving left and right channel separation, specifically above 10 kHz.
 

Over 50% reduction in moving mass 

With the implementation of dual mono LEDs, a new larger shading plate was engineered using 99.9% pure beryllium for optimal positioning and agility.  

DS Audio succeeded in reducing the weight of this shading plate by more than 50%, from 1.56 mg to 0.74 mg. This is less than 1/10th of the moving mass compared to the former/coil assembly found in a typical MC (moving coil) cartridge.

This further improves the key advantages of DS Audio’s optical cartridge technology, enhancing track-ability, reducing resonance, and minimizing record wear.

Diamond cantilever with Micro-ridge stylus, ultra-rigid body design and improved internal wiring.

A first for DS Audio, the Grand Master cartridge combines a diamond cantilever with a micro-ridge stylus. The cartridge body has been structurally designed to promote maximum rigidity. The Grand Master utilizes new internal wiring, 1.6 times thicker than used in previous generation cartridges, for greater signal flow from the dual-mono generator.

DS Audio’s technology allows unmatched performance and flexibility

The Grand Master cartridge and matching Grand Master phono stage is the ultimate realization of optical phono cartridge performance. DS Audio’s optical cartridges and equalizers are compatible with all providing many choices and upgrade paths for the ultimate in pure analog vinyl enjoyment.

DS Audio's  flagship 2 chassis optical phono stage/equalizer - it sounds like 100 lbs.

The DS Audio Grand Master phono stage features 2 massive chassis, weighing together over 100lbs. Separating the dual mono audio circuitry from the power supply chassis, which houses 3 independent supplies, provides unmatched dynamic realism.

The Grand Master audio chassis incorporates discrete design and meticulous layout, with both special film capacitors and non-induction winding resistors custom built to DS Audio’ s specifications. The equalizer offers both single-ended RCA and balanced XLR outputs and a total of 6 selectable low-frequency cut-off points allowing the Grand Master to work seamlessly with any hi-fi system.

Inside the Power supply chassis, large copper bus bars connect a total of three transformers, each with a capacity 1.5 times greater than found in our Master 1 equalizer. Independent transformers are dedicated to the left and right channels, with the third handling the power to the optical cartridge.

Combining  2.34 million uF and 2.97 million uF electrolytic capacitors within both the equalizer and power supply units results in a significantly stronger power supply with extended reproduction of deepest low frequencies and dynamic range.

DS Audio’s technology allows unmatchded performace and flexibility

The Grand Master cartridge and phono stage are compatible with all DS Audio’s optical cartridges and equalizers providing many choices and upgrade paths for the ultimate in pure analog vinyl enjoyment.