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Power amplifiers stereo — Krell KSA I400

Description, images, technical data and specifications

Krell KSA I400
Image source — © Krell

The KRELL KSA-i400 is capable of developing 400 watts when operating on a load with a nominal resistance of 8 ohms. For a 4 ohm load, the maximum power is doubled, and for a 2 ohm load, the amplifier is ready to reach 1.6 kW. When the load resistance drops to 1 ohm, the KRELL KSA-i400 is capable of delivering a peak current of up to 62 amperes. The amplifier implements the most advanced patented technologies of Krell iBias, XD and Sum-Max.

Specifications

  • Model name

    KSA I400

  • Input sensitivity (mV)

    N/A

  • Input impedance (balanced) (Ω)

    100 000

  • Input impedance (single-ended) (Ω)

    50 000

  • Output impedance (balanced) (Ω)

    < 0.05

  • Output impedance (single-ended) (Ω)

    < 0.05

  • Max current (A)

    N/A

  • Output power (8Ω) (W)

    400

  • Output power (4Ω) (W)

    800

  • Gain (dBu)

    26.5

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

    10

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

    100 000

  • Signal to Noise Ratio (dB)

    >105

  • Total Harmonic Distortion + Noise (0% global feedback) (%)

    N/A

  • Total Harmonic Distortion + Noise (100% global feedback) (%)

    <0.05

  • Max power consumption (W)

    2000

  • Damping factor

    >400

  • Dimensions (mm)

    483 x 190 x 533

  • Weight (kg)

    45.4

  • Official link

    https://www.krell.industries/ksa-i400

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