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Preamplifiers — Bella Sound Kalalau

Description, images, technical data and specifications

Bella Sound Kalalau
Image source — © Bella Sound

The amplifier's developers focused on linearity and minimal noise, and chose a scheme based on J-FET devices for neutral sound. The multi-stage filtering power supply and channels were placed in separate "Faraday cages" against interference. The circuit is fully balanced, including attenuators.

Specifications

  • Model name

    Kalalau

  • Analog inputs (balanced)

    3

  • Analog inputs (single-ended)

    3

  • Analog outputs (balanced)

    2

  • Analog outputs (single-ended)

    2

  • Gain (dBu)

    10.3dB SE, 16.3dB Bal

  • Input sensitivity (mV)

    N/A

  • Output voltage (V)

    N/A

  • Input impedance (balanced) (Ω)

    50 000

  • Input impedance (single-ended) (Ω)

    50 000

  • Output impedance (balanced) (Ω)

    N/A

  • Output impedance (single-ended) (Ω)

    N/A

  • Maximum output level (balanced) (dBu)

    N/A

  • Maximum output level (single-ended) (dBu)

    N/A

  • Volume control range (dBu)

    N/A

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

    1

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

    400 000

  • Signal to Noise Ratio (SNR, unweighted) (dB)

    103

  • Total Harmonic Distortion + Noise (THD+N) (%)

    0.008

  • Dimensions (mm)

    489.9 × 139.7 × 429.3

  • Weight (kg)

    21.3

  • Official link

    https://bellasoundaudio.com/kalalau-preamplifier.html

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