Pro-Ject Pre Box S3 Pre Amp, Black Overview
The Pro-Ject Pre Box S3 is designed for listeners building compact, flexible hi-fi systems with modern and classic sources. It acts as a central control hub for your music and TV audio, making it well suited to active speakers or small power amplifiers where space matters. HDMI ARC allows a straightforward connection to your television, helping you keep everyday viewing and music listening in one clean setup.
Analogue, digital, and wireless inputs give you the freedom to connect a turntable, streamer, or TV without extra boxes. The built-in moving magnet phono stage lets you enjoy vinyl directly, while the internal DAC keeps digital sources clear and well defined. Bluetooth adds a quick, cable-free way to play music from your phone when convenience counts. A front-panel headphone output also means you can listen privately, with enough power to suit a wide range of headphones.
Product Ref: 365513
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Specifications
| Model | Pre Box S3 |
|---|---|
| Noise Floor | -108 dBV (-111 dBV A-weighted) |
| Gain | 4.5 dB |
| Total Harmonic Distortion | <0.007 (1 kHz / 0 dBFS) |
| Frequency Response (20 Hz – 20 kHz) | <0.4 dB |
| Channel Separation | <72 dB (10 kHz) |
| Signal-to-Noise Ratio | 110 dB (120 dB A-weighted) |
| Headphone Amplifier Output | 2 × 70 mW @ 32 Ω (1 THD) |
| Line Level Inputs | 2 pairs RCA |
| Line Input Sensitivity | 270 mV |
| Line Input Impedance | 50 kΩ |
| Phono Input | 1 pair RCA |
| Phono Cartridge Compatibility | MM, MI, High-output MC |
| Phono Input Impedance | 47 kΩ |
| Phono Input Gain | 45 dB |
| USB Input | USB Audio Class 2 (USB 2.0 or higher required) |
| PCM Sample Rates | Up to 192 kHz / 24-bit |
| S/PDIF Coaxial Input | 1 × RCA (up to 192 kHz / 24-bit) |
| S/PDIF Optical Input | 2 × TOSlink® (up to 192 kHz / 24-bit) |
| TV Input | 1 × HDMI |
| Bluetooth Version | 5.0 |
| Bluetooth Codecs | aptX, aptX HD, A2DP |
| Bluetooth Max TX Power | +4 dBm |
| DAC | Cirrus Logic CS4344 (24-bit / 192 kHz, multi-bit Delta-Sigma) |
| Fixed Line Output | 3.5 mm stereo jack |
| Variable Line Output | 1 pair RCA |
| Subwoofer Output | RCA |
| Headphone Output | 6.3 mm jack (16 – 600 Ω) |
| Trigger Output | 12 V DC, 2-pole coaxial Ø 2.5 mm jack |
| RS-232 | Pluggable 3-pin terminal block |
| Outboard Power Supply | 18 V / 500 mA DC |
| Power Consumption (Standby) | <0.5 W |
| Remote Control Battery | 2 × AAA |
| Dimensions (W x H x D) | 206 x 55 x 153 mm (176 mm incl. sockets) |
| Weight | 1020 g (without power supply) |
| Product Code | PPREBOXS3B |
| EAN | 9120122290354 |
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