Pro-Ject Phono Box S3 B Silver Dual Turntable Support

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  • ColourSilver
  • Manufacturer Guarantee2 years
  • EAN9120097829269

Pro-Ject Phono Box S3 B Silver

Precision and Performance for Audiophiles

The Pro-Ject Phono Box S3 B is a cutting-edge phono stage that introduces true balanced connections to elevate your vinyl playback experience. Designed with the discerning audiophile in mind, it seamlessly integrates into high-fidelity setups, offering the option to use either traditional RCA or advanced balanced inputs, ensuring superior sound quality with minimal noise.

Balanced Connections for Superior Clarity

At the heart of the Phono Box S3 B is the 5-pin mini XLR balanced input, allowing for a fully balanced connection with compatible turntables. When used with Pro-Ject's X8 Superpack or other compatible models, this feature enables optimal signal transfer, eliminating noise and distortion that often plague unbalanced systems. This connection improves channel symmetry, resulting in a clearer, more immersive listening experience with greater detail and less interference.

Discrete Gain Stage for Optimal Sound

Pro-Ject has designed the S3 B with a fully discrete gain stage, meaning no integrated components, just individual parts that allow for a richer, more expansive sound. This approach results in a natural and dynamic audio experience, maximizing performance without compromising on the quality of construction.

Precision RIAA Equalization

Incorporating a semi-passive RIAA equalization, the Phono Box S3 B handles the balanced XLR inputs with utmost precision, ensuring that both channels are in perfect symmetry. For traditional RCA outputs, the signal is delivered directly from the source, minimizing any signal degradation and maintaining the integrity of your audio.

Dual Turntable Support

Building on the success of the S2, the S3 B allows for the simultaneous connection of two turntables without sacrificing signal integrity. The unit’s system memory enables easy switching between turntables, making it an ideal solution for multi-turntable setups.

Unmatched Sound Versatility

With a gain range of 40 to 65 dB, the Phono Box S3 B offers a broader sound spectrum than ever before. The balanced input plays a crucial role in ensuring your system is in perfect harmony, whether you're integrating other analog sources like a CD player or digital streaming options.


Key Features:

  • 5-pin mini XLR balanced input for true balanced connections.
  • Fully symmetrical & discrete gain stage for dynamic, high-quality sound.
  • Dual mono design to improve signal processing.
  • Semi-passive RIAA equalization for precise audio output.
  • Low noise and low distortion for clear, pure sound.
  • MM & MC capability for flexible cartridge compatibility.
  • Easy settings adjustment via the front faceplate.
  • Aluminum casing to reduce interference and vibrations.
  • Made in Europe, ensuring premium craftsmanship.

Technical Specifications:

  • Input Impedance: 10, 50, 100, 1k, 47k ohms
  • Input Capacitance: 50, 150, 300, 400 pF
  • Gain (+6dB using XLR Out): 40, 45, 60, 65 dB
  • Signal-to-Noise Ratio MM (40dB): 103dBV, 110dBV - 'A' weighted
  • Signal-to-Noise Ratio MC (60dB): 85dBV, 90dBV - 'A' weighted
  • Total Harmonic Distortion (THD): <0.001% MM, <0.005% MC (at 1kHz)
  • Total Harmonic Distortion (THD, 20Hz-20kHz): <0.008% MM, <0.01% MC
  • RIAA Equalization Accuracy: <0.3dB / 20Hz - 20kHz
  • Subsonic Filter: At 20Hz with 18dB/octave
  • Inputs: 1x 5-pin mini XLR, 1x pair RCA phono
  • Outputs: 1x pair RCA, 1x pair XLR
  • Power Supply: 18V/500mA DC
  • Power Consumption: 18V/170mA DC, <0.5W in standby
  • Dimensions: 206 x 55 x 153 mm (164 mm with sockets)
  • Weight: 930g (without power supply)

The Pro-Ject Phono Box S3 B represents a leap forward in vinyl playback technology, offering superior connectivity, sound quality, and versatility for audiophiles. Whether you’re upgrading your existing turntable setup or looking to build a more sophisticated audio system, the S3 B is the ideal choice for audiophiles seeking the very best in phono stage technology.

More Information
Manufacturer Pro-Ject
GTIN 9120097829269
Colour Silver
Model Number PHONOBOXS3B-SIL
Is Soft Bundle No