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Preamplifiers — Circle Labs Audio P300

Description, images, technical data and specifications

Circle Labs Audio P300
Image source — © Circle Labs Audio

The Circle Labs P300 is a fully balanced preamp with neutral sound and minimal signal path length. It is built on modern JFET and BJT transistors, uses the proprietary Circle Amp topology and a 63-step relay volume control, and the power supply is organized through two independent transformers and proprietary low-noise stabilizers.

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Specifications

  • Model name

    P300

  • Analog inputs (balanced)

    2

  • Analog inputs (single-ended)

    3

  • Analog outputs (balanced)

    2

  • Analog outputs (single-ended)

    N/A

  • Gain (dBu)

    N/A

  • Input sensitivity (mV)

    N/A

  • Output voltage (V)

    N/A

  • Input impedance (balanced) (Ω)

    66 000

  • Input impedance (single-ended) (Ω)

    33 000

  • Output impedance (balanced) (Ω)

    15

  • 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)

    2

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

    500 000

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

    N/A

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

    N/A

  • Dimensions (mm)

    430 x 342 x 127

  • Weight (kg)

    10.6

  • Official link

    https://www.circlelabs.eu/en/product/preamplifier-P300

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