SUPER ANALOG STYLUS

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Super Analog Stylus Series
Precision-made Premium Quality Super Analog Stylus

1. SAS Profile Tip

The tip of the Super Analog Stylus is carefully chosen from single-crystal natural diamonds. The laser-cut diamond closely resembles that of the cutting stylus used on a cutting lathe to produce the acetate master disks used in vinyl production. This allows the SAS tip to reach into the deepest recesses of the record groove in order to retrieve details which were previously inaccessible to other stylus profiles. Due to its wide contact area with the groove wall, the SAS can reproduce a more expansive bandwidth of information with higher fidelity.

Featuring a line contact profile in the shape of a narrow ridge only a few microns in width, the SAS tip achieves a curvature of radius not previously available in similarly shaped styli. The curvature of this profile is optimized to distribute effective mass, thereby eliminating excess pressure on the record groove wall and reducing distortion introduced by uneven wear. Additionally, the tip is polished to the highest standard to preserve the record and extend the use of the stylus.

2. Cantilever Construction

Boron

Boron is one of the most suitable materials for cantilevers; its density is low, Young’s modulus is large, and the speed of sound propagation is approximately 2.6 times faster than that of aluminum. Due to the characteristics above, boron cantilever can more precisely trace the information contained in the record grooves than aluminum cantilever.
Macro photo of Boron cantilever and tip

Sapphire

The reproducibility of the sound engraved on analog records is further enhanced by adopting sapphire for cantilevers since sapphire has high rigidity. Compared to aluminum cantilevers, every single sound will be defined more clearly, allowing the users to enjoy crystal-clear sound.
Macro photo of sapphire cantilever and tip

Ruby

Similarly, the SAS/R enjoys all the sapphire benefits with one crucial advantage: The four facets of its crystalline ruby cantilever taper toward the diamond tip. This tapered ruby cantilever design allows for lower moving mass, giving the SAS/R even greater ability reproduce vibrations in the record groove with precision, accuracy, speed, and fidelity. Facets of the tapered ruby cantilever can be seen in the image below. Cuts made to the cantilever reduce the moving mass of the diamond stylus tip.
Macro photo of ruby cantilever and tip

3. Single Point Tension Wire Suspension

In order to transmit vibrations from the stylus tip to the transducer magnet faithfully, the cantilever is supported by a specially constructed suspension. A single strand of ultra-fine piano wire is attached to the cantilever which then passes through the magnet before being secured internally to the housing. This helps to stabilize the movement of the magnet and reduce distortion from resonance that builds up as oscillations are transmitted through the cantilever, thus preserving the original signal down to the smallest detail.
Tension wire controls movement of cantilever and tip

4. Specially Formed Rare Earth Magnet

To extract the maximum performance from the single point tension wire a specially shaped magnet is mounted coaxially to the cantilever. The magnet is composed of rare earth elements, the magnetic strength and reduced weight of which give it exceptional properties for use in this application.

 

Contact Surface Area as a Function of Stylus Tip Profile

The chart below depicts several types of stylus profiles viewed head on and in cross section. Also seen are the measurements of their tip radii and the surface area in contact with the record groove wall. Profile radii (R) are measured in microns (µ). Surface area in square microns (µ2) is calculated using measurements L1 and L2. Variations in the size and shape of the stylus tip affect the amount of surface area which can be applied to the groove wall. By optimizing its curvature and reducing the minor radius, the SAS tip maximizes the contact surface area by a factor of 1.25 in comparison to other line contact styli.

Points of Contact with the Record Groove During Reproduction

As the record rotates the orientation of the groove wall changes relative to its point of contact with the stylus. At the microscopic level the undulations of the groove present various angles to the diamond tip. Because the SAS tip mimics the shape of a cutting stylus, it sits more comfortably in the groove. The better the stylus fits the record groove, the less distortion occurs at high amplitude reproduction.

Caution

  • Be sure to use the SAS stylus at the prescribed tracking force of 1.0-1.5 g. Greater force may damage the stylus tip or the record groove, or distort sound reproduction.
  • Because of the extremely precise reproduction capability of the SAS stylus, it is particularly sensitive to foreign matter or dust in record grooves. To prevent distortion, muffled sound, noise and excessive stylus wear, make it a practice to clean each record before playing it.
  • Foreign matter or dust can also collect on the stylus itself. It should be checked before playing each record.
  • Be careful not to strike the stylus tip with any object, touch it with bare hands, or damage it in any other way.
  • Although the criteria for replacing the stylus vary depending on conditions of use, it should last for approximately 500 playing hours at optimum performance and can be used much longer in less than optimum condition (2-3 times as long as a standard diamond stylus).
  • Unlike cantilevers of conventional material, the boron, sapphire and ruby cantilevers are susceptible to fracture. Please refrain from using excessive force or touching the cantilever unless absolutely necessary (i.e. for the purpose of cleaning)