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Thrax Audio Cotys – an Uncompromising MC-Phonostage from Bulgaria

12.06.2025 06:31 | ~1 minute read

The innovative Thrax Audio Cotys phono preamplifier is presented – a model designed for fans of High-End equipment and developed in Bulgaria. The device is designed to work with MC cartridges and uses a fully balanced RIAA equalizer based on LCR filters. The innovative differential input stage and nanocrystalline inductors set a new standard for noise levels – it does not exceed 70 nV! Fully adjustable load/gain (100 – 1,000 Ohms and 50 – 70 dB) is the cherry on the cake.

Developed by the company's founder Rumen Artarski based on user requests and personal 30 years of experience, Cotys is created specifically for modern MC cartridges – with the lowest noise level, maximum flexibility and absolute sound purity. Two independent MC cartridge inputs are precisely matched to low output, high impedance cartridges.

Image source - (c) Thrax Audio

Specifications

This product is in the Hi-Fi and High End Electronics and Acoustics database

Phonostages — Thrax Audio Cotys

  • Model name

    Cotys

  • Inputs (balanced)

    N/A

  • Inputs (single-ended)

    N/A

  • MC current-sensing input impedance (Ω)

    N/A

  • MM/MC voltage input impedance (Ω)

    1 - 100

  • Output impedance (Ω)

    N/A

  • Gain (dB)

    50 - 70

  • Playback EQ curves accuracy (dB)

    N/A

  • Frequency response low +/- 3dB (Hz)

    N/A

  • Frequency response high +/- 3dB (Hz)

    N/A

  • Total Harmonic Distortion + Noise (%)

    N/A

  • Dimensions (mm)

    N/A

  • Weight (kg)

    N/A

  • Official link

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