My Sonic Lab announced the MC cartridge "Eminent" in the fall of 2003 with the theme of "Low source impedance, high output energy...!" The MC cartridge "Eminent" is the world's first high-performance cartridge with internal impedance: 1.8Ω/output voltage: 0.5mV. It brought an impact as a cartridge with efficient design.

This is the basis of the power generation principle of the MC cartridge, and is also the ideal form.

How should we develop this performance? Cartridge manufacturers are required to improve sound quality.

Hyper Eminent aimed to pursue the vibration mode of the cartridge base and the precision of the vibration system suspension mechanism in order to obtain further perfection from the experience of the first Eminent. The base part is made of ultra-super duralumin (A7075), which has a higher hardness, and in order to eliminate the inherent resonance caused by a single material, we have introduced a sandwich effect that is further strengthened by applying surface hardening treatment. Since it was originally used for aircraft, it is a material that emphasizes strength and does not have good plating properties, making surface treatment difficult and the yield rate (good product rate) extremely low. In order to achieve this, we introduced a special ion hardening process and achieved a surface hardness of Hv1500 or higher, although this resulted in an expensive part because it could not be replaced with other treatments.

On the other hand, although much has been said about establishing the fulcrum of the vibration system, there are many unstable factors, so we obtained the stylus in semi-assembled form, reprocessed it in-house, and managed the assembly. We are trying to stabilize our products using a method that is extremely time-consuming.

specification

Format: Ultra-low impedance MC cartridge

Frequency range: 10-50,000Hz

Output voltage: 0.5mV (1kHz)

Internal impedance: 1.8Ω

Appropriate stylus pressure: 1.9 to 2.2g (centered on 2g)

Cantilever: Super duralumin double structure

Needle tip: semi-line contact (3μm x 30μm)

Channel balance: within 0.5dB (1kHz)

Crosstalk: 30dB or more (1kHz)

Core material: SH-μX (My Sonic Lab)

Magnet: Neodymium #50

Terminal pin: Bright rhodium plating treatment

Weight: approx. 9.5g