ProJect Phono Box S3 B Phono Preamplifier

ProJect Phono Box S3 B

Lift up your analog audio with the ProJect Phono Box S3 B! Enjoy clarity and sound detail that was meant to be heard. This phono preamplifier has you covered to help you experience every nuance of your favourite vinyl records. Why buy? Because you deserve to let the music move you!

High End Features Made Accessible

The Phono Box S3 B comes in completely redesigned casework. The larger size (than the S2) enables a completely new feature set that breaks new ground at the price. The steel & aluminium case offers very high rigidity and isolation against outside interferences, which is essential for the new technology inside.

Fully Discrete and Symmetrical Gain Stage

The new Phono Box S3 B gain stage uses a fully discrete layout. A discrete circuit is composed of disparate electronic components and individual devices that result in better sound quality. 

The amplifier section of the Phono Box S3 B is built of single parts and doesnt use any integrated circuits. This makes for a longer and more costly design process but the resulting audio speaks for itself.

True Balanced Connection

 Part of the Phono Box S3 B's redesign is the inclusion of a balanced signal at a terrific price point. And the best part is that thanks to a range of new cables from Pro-Ject, these inputs can be used with any ProJect turntable, whether it has RCA or 5P XLR outputs. 

However, to truly utilise the balanced circuitry, a ProJect turntable with a moving coil cartridge and 5P output can be connected to the Phono Box S3 B with a 5P to XLR cable. The decreased noise and interference and improved dynamics have to be heard to be believed.

Technical Specifications
Input Impedance 10, 50, 100, 1k, 47 k
Input Capacitance 50, 150, 300, 400 pF
Gain (+6 dB Using XLR Out Sockets) 40, 45, 60, 65 dB
Signal / Noise Ratio MM (40 dB) 103 dBV, 110 dBV - 'A' Weighted
Signal / Noise Ratio MC (60 dB) 85 dBV, 90 dBV - 'A' Weighted
THD at 1 kHz
THD (20 Hz - 20 kHz)
RIAA-Equalisation Curve Accuracy
Subsonic Filter At 20 Hz with 18 dB/Octave
Input 1 x 5-Pin Mini XLR, 1 x Pair RCA Phono Sockets
Line-Level Output 1 x Pair RCA, 1 x Pair XLR
Power Supply DC 18 V / 500 mA
Power Consumption 18 V / 170 mA DC,
Dimension (W x H x D) 206 x 55 x 153 (164 with sockets) mm
Weight 930 g not including Power Supply
 *reprint from manufacturer's website