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Power amplifiers mono — Limestone PP1

Description, images, technical data and specifications

Limestone PP1
Image source — © Limestone

The output stage of the Limestone PP1 amplifier is built using a push-pull circuit with KT88 tubes. The phase splitter and driver stage use Shuguang Black Treasure CV181-Z tubes, which can be replaced with 6SN7 TAD or NOS Sylvania “Bad Boy”. Gold-plated WBT connectors are provided for connecting acoustic systems. This hand-assembled tube amplifier provides impressive audio performance, combining precision engineering with premium components.

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Specifications

  • Model name

    PP1

  • Input sensitivity (mV)

    N/A

  • Input impedance (balanced) (Ω)

    N/A

  • Input impedance (single-ended) (Ω)

    N/A

  • Output impedance (balanced) (Ω)

    N/A

  • Output impedance (single-ended) (Ω)

    N/A

  • Max current (A)

    N/A

  • Output power (8Ω) (W)

    N/A

  • Output power (4Ω) (W)

    45

  • Gain (dBu)

    N/A

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

    30

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

    30000

  • Signal to Noise Ratio (dB)

    N/A

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

    N/A

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

    1

  • Max power consumption (W)

    N/A

  • Damping factor

    N/A

  • Dimensions (mm)

    250 x 250) x 550

  • Weight (kg)

    18

  • Official link

    https://limestone.hr/pp1

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