Moving Coil Phono Cartridge KOETSU Urushi Gold
The Koetsu Urushi Gold is a handcrafted moving coil phono cartridge made in Japan, continuing a legacy of precision audio engineering and Japanese craftsmanship. Its distinctive gold Urushi finish brings an elegant visual expression to the renowned Koetsu cartridge tradition.
Rosewood with Beech Resin Layer and Hand Lacquering
The Urushi lacquer is applied in multiple layers, similar to a piano-grade finish, and continues to cure and harden over the course of many years. As a result, the resonance characteristics of the cartridge body evolve over time, leading to reduced resonances. The lacquering process can take up to six months, as each individual layer must be fully cured before the next is applied. Only then is the lacquer ready for packaging and shipment.
Silver Cladding Process
A thin silver shield is drawn over the copper wire (it is not simply silver-plated), making this a highly complex and demanding process. The (Black, Gold, Blue, Tsugaru and Wajima) is manufactured using a single coil. This design features an output voltage of 0.4 mV versus the Vermillion, which has an output voltage of 0.2 mV.
Load Impedance and Tonearm Mass
Specifications for load impedance and tonearm mass may vary. Sugano-san specifies load impedance values ranging from 5 ohms to 100 kΩ. This means that, in practice, careful experimentation and gradual optimization are essential to determine the ideal setting within any given system.
- Coils: High-pure 6-N Cu (99,9999%), Silver coated – silver, Cladding process
- Magnet: Samarium Cobalt or Permendur
- Stylus: Fine Line or Line Contact
- Output: 0.4 mV at 1kHz 5 cm/sec
- Frequency Range: 20Hz – 100kHz
- Channel Separation: 30 db at 1kHz
- Resistance: 5 ohm
- Channel Balance (db / 1kHz) : 0.5 db / 1kHz
- Tracking Force: 1.8 to 2.0 pond (at 20° Celsius)
- Cantilever: Boron, pre-aged rubber damper
- Compliance: 5 x 10 – 6 cm/dyne at 100Hz
- Weight: 9.37 grams
- Recommended Load: 5 – 40 ohm with Step up, 100 – 1000 ohm MC Phono
- Recommended Tonearm Mass: Medium to high, 12 to 20 grams
Option on demand : On customer's site installation and set-up.
Please send an email to : contact@audiosoundmusic for a quote request.