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MU-4 EVO is a stereo integrated amplifier supporting KT-120 or KT-88/6550 tubes in the output stage. Output tubes work in Push-Pull and fixed bias mode with moderate 8dB negative feedback. It yields up to 70 Watts of power per channel and vivid, dynamic sound. Biases of output tubes pair in each channel are maintained in exact symmetry by a specialized servo. As a result, harmonic distortion, noise and hum are effectively eliminated.  Output transformers work in ultra linear mode for harmonic distortion reduction. A massive 400W toroidal transformer guarantees a high margin of spare power.


MU-4 EVO Integrated Amplifier

SKU: 364215376135191
  • Frequency response: +0dB/-3dB: 10Hz-70kHz

    Frequency response @ 70W: +0dB/-0.25dB: 20Hz-20kHz

    Nominal Power at THD=1%: 2x70W (KT120) 2x60W (KT88)

    Voltage gain @ 4/8Ω: 31/35dB

    RMS Noise A-weighted, max power: -75dBV

    THD+N @1W : <0.05%

    Damping factor : 2.5

    Speaker outputs: 4Ω, 8Ω

    Tubes: 4xKT120 (or KT88 or 6550), 2x6N1P, 2x12BH7

    Dimensions (W/L/H): 43.5/43.5/23.5 cm

    Weight: 21kg / 46 lbs

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