Mr Seiji Yoshioka’s pioneering spirit and sustained commitment to the perfection of moving coil phono cartridges is represented by his latest and unfathomable flagship model – “THE PROTEUS”

The Proteus can only be understood in musical and emotional terms; it skillfully weaves it’s spell by interpreting analogue playback with such natural resolution, scale and dimension, that it leaves you lost in the music. It eloquently performs this by revealing the subtle cues and nuances that gives the listener that magical chill of recognition so often inaudible with other cartridges.

The Proteus triumphs at the highest level by almost disappearing and leaving its audience with a palpable sense of intensely communicative music. In other words – pure and simple musical enjoyment.


  • Specially designed 5N silver coils increases transparency and natural detail
  • Hard wired internally mini-leads for greater accuracy which provides more of the music
  • Total control over one of the several variables which can adversely influence the Proteus’ ultimate performance
  • Two coils within double ring neodymium magnets
  • No yokes
  • No magnetic irregularities
  • Coils at the crux of the magnet
  • Ultra tight magnet-coil coupling for improved resolution
  • Body design in special aluminium with true control of the frequency


Weight: 7.8g
Output voltage: 0.2mV (3.54cm/s, 1kHz)
Internal impedance: 1 ohm
Frequency response: 10Hz – 20kHz +1.5dB, 20kHz – 40kHz +2dB
Channel separation: 30dB (200Hz – 1kHz)
Channel balance: 0.5dB at 1kHz
Tracking ability: 70µm at tracking force 2.0g at 315Hz
Dynamic compliance: 13 x 10-6 cm/dyne
Recommended loading: 10 ohms
Recommend’ tracking force: 2.0 g
Optimum working temperature: 23º celsius
Break in period: 30 hours