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Integrated amplifiers — Pro-Ject Stereo Box DS3

Description, images, technical data and specifications

Pro-Ject Stereo Box DS3
Image source — © Pro-Ject

The Stereo Box DS3 is an integrated amplifier with phono stage and built-in DAC from Pro-Ject, built with substantial output power in a remarkably compact chassis. The Stereo Box DS3 brings Pro-Ject's considered engineering to a complete, feature-rich integrated format.

Key specs that matter

Three single-ended inputs are provided. Input impedance is a substantial 50,000 ohms. Output power is 80W into 8 ohms, rising to 150W into 4 ohms. Frequency response spans 20Hz to 20,000Hz within plus-or-minus 3dB. Signal-to-noise ratio is 98dB, with total harmonic distortion plus noise under 0.01%. At a remarkably compact 206 x 71 x 194mm and 1.8kg, the Stereo Box DS3 maintains a space-efficient, feature-complete integrated amplifier chassis.

Sound and use context

Expect surprisingly clean, capable amplification reflecting the strong 98dB signal-to-noise figure, with the built-in phono stage and DAC covering both analogue vinyl and digital sources directly, packed into this remarkably compact chassis.

Pairing

The built-in phono stage and DAC cover both analogue vinyl and digital sources directly without needing separate outboard devices.

Alternatives

Pro-Ject's own Stereo Box E offers a more accessible, lower-power alternative within the same broader Stereo Box catalogue.

Specifications

  • Model name

    Stereo Box DS3

  • Type

    Integrated Amplifier with Phono and DAC

  • Analog inputs (balanced)

    N/A

  • Analog inputs (single-ended)

    3

  • Input sensitivity (mV)

    N/A

  • Input impedance (balanced) (Ω)

    N/A

  • Input impedance (single-ended) (Ω)

    50 000

  • Output impedance (balanced) (Ω)

    N/A

  • Output impedance (single-ended) (Ω)

    N/A

  • D/A conversion

    Yes

  • Phono MM/MC current-sensing input impedance (Ω)

    N/A

  • Output power (8Ω) (W)

    80

  • Output power (4Ω) (W)

    150

  • Gain (dBu)

    N/A

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

    20

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

    20 000

  • Signal to Noise Ratio (dB)

    98

  • Total Harmonic Distortion + Noise (%)

    <0.01

  • Damping factor

    N/A

  • Dimensions (mm)

    206 x 71 x 194

  • Weight (kg)

    1.8

  • Official link

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