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Pro-Ject Tube Box S3 B Balanced Audiophile Tube Phono Stage, Silver

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Colour: Silver

Key Features

  • Balanced tube design
  • Front-panel controls for quick cartridge tuning
  • Dual inputs with memory for easy switching
  • Warm analogue tone from ECC83 tubes
  • Aluminium casing reduces unwanted interference

Pro-Ject Tube Box S3 B Balanced Audiophile Tube Phono Stage, Silver Overview

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The Pro-Ject Tube Box S3 B Phono Stage is ideal for vinyl enthusiasts looking to unlock greater warmth, detail and flexibility from their turntable setup. It offers a true balanced signal path with both mini XLR and standard RCA inputs, allowing you to connect two turntables at once. Input settings are stored separately for each, making it easy to switch between setups without losing your preferences. Cartridge matching is simple thanks to the wide range of gain, capacitance and impedance options, all of which are adjustable from the front panel.


Inside, twin ECC83 tubes bring a rich, analogue sound, while a fully symmetrical dual-mono design ensures the cleanest possible amplification. Balanced XLR outputs offer interference-free connection to your amp, ideal for low-output cartridges or longer cable runs. Housed in a rigid aluminium chassis and available in black or silver, the Tube Box S3 B is a compact but powerful addition to any serious vinyl system.

Product Ref: 348071

Full Description

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Specifications

Tube assembly 2x ECC83 (12AX7)
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
SNR MM (40dB) 97dBV, 105dBV - ‘A’ weighted
SNR MC (60dB) 83dBV, 88dBV - ‘A’ weighted
THD at 1 kHz <0.005% MM, <0.01% MC
THD (20Hz–20kHz) <0.1% MM, <0.03% MC
RIAA-equalization curve accuracy <0.4dB / 20Hz - 20kHz
Subsonic filter at 20Hz with 18dB/octave
Input 1x 5-pin mini XLR / 1x pair RCA phono sockets
Line-level output 1x pair RCA, 1x pair XLR
Power supply DC 18V/1000mA
Power consumption 18V/800mA DC, <0.5 W in standby
Dimensions (WxHxD) 206 x 81 x 153 (164 with sockets) mm
Weight 1010g without power supply
Product Code PJATUBEBOXS3B1S
EAN 9120129869980

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