---
product_id: 292058821
title: "PRO-JECT TUBE BOX S2 UNI - BLACK"
brand: "pro-ject"
price: "€ 748.22"
currency: EUR
in_stock: true
url: https://www.desertcart.it/products/292058821-pro-ject-tube-box-s2-uni-black
store_origin: IT
region: Italy
---

# Replaceable ECC83 tubes for customizable sound Front Subsonic filter & gain control for perfect tuning Dual mono circuitry for pristine channel separation PRO-JECT TUBE BOX S2 UNI - BLACK

**Brand:** pro-ject
**Price:** € 748.22
**Availability:** ✅ In Stock

## Summary

> 🎵 Elevate your vinyl vibe with tube-powered precision!

## Quick Answers

- **What is this?** PRO-JECT TUBE BOX S2 UNI - BLACK by pro-ject
- **How much does it cost?** € 748.22 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/292058821-pro-ject-tube-box-s2-uni-black)

## Best For

- pro-ject enthusiasts

## Why This Product

- Trusted pro-ject brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Tailor Your Tone:** Replaceable ECC83 tubes let you shape your sound signature with ease.
- • **Precision Control:** Front panel subsonic filter and gain control for fine-tuning your listening experience.
- • **Pure Audio Clarity:** Dual mono circuitry ensures ultra-low noise and crystal-clear channel separation.
- • **Vibration & EMI Shielding:** Robust aluminum casing protects against interference for uncompromised sound quality.
- • **Versatile Cartridge Support:** Compatible with both MM and MC cartridges, plus 5 variable input impedance settings.

## Overview

The PRO-JECT TUBE BOX S2 UNI is a compact, high-end phono preamplifier featuring fully discrete circuitry without OpAmps, dual mono design for ultra-low noise, and replaceable ECC83 tubes for customizable sound. It supports both MM and MC cartridges with multiple gain and impedance settings, housed in a vibration-resistant aluminum case for superior audio fidelity.

## Description

Innovative miniature sized phono preamplifier with tube output and high end sound! Tube Box S2 is our very first product to feature a fully discreet circuit design without using any operational amplifiers (OpAmps). It also is the first product to come with replaceable tubes for tube rolling and sound-shaping. This gives the customer many options to pick from and alter the sound signature to his preference. Tube Box S2 will give a full and relaxed laid back sound with lush mids, just like you would expect it from a much bigger high end tube phono pre-amplifier. It offers support for both MM and MC cartridges and comes with many gain settings to be switched on the front panel. Five variable input impedance settings are available to adjust to any MM cartridge, the 47k ohms input impedance setting is fixed and suited for high output MC cartridges. The aluminium/metal casing is adapted to our DS2 line in looks and protects against vibrations and electromagnetic interferences for superior sound.

## Features

- Suitable for MM and MC cartridges
- 2x ECC83(12AX7) tubes (replaceable)
- Front-sided Subsonic filter button & Gain control
- Dual mono circuitry for optimized channel separation & Ultra low noise circuitry with FET input stage
- Dimensions 103mm x 73mm x 131mm (with sockets) ; Weight 410g

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B075KPB1P2 |
| Best Sellers Rank | #30,531 in Electronics ( See Top 100 in Electronics ) #5 in Home Audio Phono Preamps |
| Brand | Pro-Ject |
| Customer Reviews | 4.5 4.5 out of 5 stars (476) |
| Date First Available | November 25, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.12 pounds |
| Item model number | Pro-Ject Tube Box S2 |
| Manufacturer | Pro-ject |
| Material | Cotton |
| Maximum Supply Voltage | 18 Volts |
| Mounting Type | Table Top |
| Number of Channels | 2 |
| Output Power | 10 Watts |
| Package Type Name | single unit box |

## Product Details

- **Manufacturer:** Pro-Ject Audio
- **Maximum supply voltage:** 18 Volts
- **Mounting type:** Surface Mount
- **Brand:** Pro-Ject
- **Number of channels:** 2

## Images

![PRO-JECT TUBE BOX S2 UNI - BLACK - Image 1](https://m.media-amazon.com/images/I/71-LwDsjtEL.jpg)

## Questions & Answers

**Q: How come my tubes dont light up?**
A: Thanks for your question. The tubes on the S2 do not light up. They have a very low glow that is barely perceptible.
World Wide Stereo is 43 years old and a proud authorized Pro-Ject dealer.

**Q: Can anyone tell me which dip switches should be on for an ortofon 2m blue cartridge? thanks! this is all new to me.**
A: Thanks for your question. Using the included owners manual as a guide, for a 2M Blue:: 1-off, 2-on, 3-off, 4 -8 are off.
World Wide Stereo - since 1979 - and a proud authorized Pro-Ject dealer.

**Q: can you roll the tubes?**
A: Yes, you can.

**Q: Anyone recommend dip switch settings for sumiko rainer mm cartridge?**
A: Thanks for your question. The Sumiko Rainer cartridge specifications state  Load Impedance: 47kOhms, Recommended Load Capacitance: 100pF to 200pF, and Output Voltage: 5.0mV. Set input impedance at default 47k, Capacitance at 150pF. Set Input gain at the recommended 43dB. The Tube Box S2 owners manual details the 8 dip switch settings.
World Wide Stereo is 42 years old and a proud authorized Pro-Ject dealer.

## Frequently Bought Together

- Pro-Ject Tube Box S2 Pure-Tube MM/MC Phono Preamplifier (Black)
- Primeda Auidophile 2RCA Male to 2RCA Male Stereo Audio Cable,Gold Plated | 4N Oxgen-Free Copper Core (3 Feet (1M))
- Monoprice 1.5ft Premium 2 RCA Plug/2 RCA Plug M/M 22AWG Cable - Black

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-02-26*