Since my last post in this thread i have expanded my collection of Grace, currently using a very rare LEVEL II (LC-OFC) with Sapphire cantilever.
Finally took some nice pictures of my spare Grace
LEVEL II (BR/MR) LC-OFC. This model comes with
Boron Pipe cantilever and
MicroRidge stylus tip.
***The advantage of the Pure Boron Pipe Cantilever:
Somewhere in the high frequencies, every cartridge has an undesirable resonance point. Undesirable because there the frequency response curve climbs a sudden peak. If that peak is in the audible range, your records sound not as intended. That resonance frequency is determined by the total effective moving mass of the vibrating system - the summed masses of the diamond stylus and, most importantly, the cantilever and magnet, etc. To shift that harmful resonance frequency up into the high supersonics, the effective moving mass must be reduced to the lowest possible minimum. Also, too much effective moving mass increases the mechanical impedance, thereby negatively affecting the cartridge's tracing ability. This is why GRACE LEVEL II, in its top grade cartridge (BR/MR), uses a Pure Boron Pipe cantilever. Pure Boron, because among all feasible materials Boron has the optimum combination of hardness (close to diamond's), lightness and rigidity. Grace LEVEL II BR/MR achieves the ultra-low mass that you need for flat, extended frequency response up into the highest range. Flat response for natural, unadulterated, warm and thoroughly listenable music. The extreme difficulties of machining Boron to the tightest tolerances have been solved. Mouting holes for the stylus, for example, must be drilled not by machines but by laser beams.
***The advantage of the Micro Ridge stylus tip:
MicroRidge stylus profile is the most advanced profile in the world today, modern cartridges with MicroRidge stylus cost many thousand dollars. Micro Ridge is very unique stylus which is polished into the unusual shape. It has microscopic curvature of contact surface with records. This makes Micro Ridge Stylus does not change the contact radius by the wear after long playing time. You can always listen to music by the new stylus. At the same time this curvature has the radius of only 2 microns. Due to this small figure, the reproduction sounds have very high definition, wide dynamic range and low distortion. Low equivalent moving mass and the very new stylus will show the new aspects in the reproduction sounds. Micro Ridge Stylus is the newest one that was born by the most advanced technology for video disc player systems. Grace LEVEL II BR/MR has the most advanced square nude crystal oriented MicroRidge diamond.