---
product_id: 87763493
title: "Pro-Ject Tube Box S2 Black - Phono Preamp"
brand: "pro-ject"
price: "AR$1838387"
currency: ARS
in_stock: true
reviews_count: 13
category: "Pro Ject"
url: https://www.desertcart.com.ar/products/87763493-pro-ject-tube-box-s2-black-phono-preamp
store_origin: AR
region: Argentina
---

# Discrete low-noise circuit, no op-amp 2 ECC83 tubes for rich, warm sound Aluminum-metal housing blocks vibration & EMI Pro-Ject Tube Box S2 Black - Phono Preamp

**Brand:** pro-ject
**Price:** AR$1838387
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your vinyl ritual with tube-driven sonic bliss!

## Quick Answers

- **What is this?** Pro-Ject Tube Box S2 Black - Phono Preamp by pro-ject
- **How much does it cost?** AR$1838387 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/87763493-pro-ject-tube-box-s2-black-phono-preamp)

## 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

- • **Tube-Powered Warmth:** Miniature ECC83 tubes deliver lush, detailed analog sound that vinyl lovers crave.
- • **Precision Engineering:** Fully discrete circuit design ensures ultra-low noise and pristine audio clarity without digital artifacts.
- • **Audiophile-Grade Components:** Polystyrene capacitors and gold-plated RCA connectors guarantee premium signal integrity and durability.
- • **Customizable Gain & Filtering:** Front-panel gain settings and subsonic filter let you tailor sound to your exact cartridge specs and room acoustics.
- • **Vibration & Interference Shielding:** Robust aluminum and metal sandwich chassis protects your music from external noise and mechanical vibrations.

## Overview

The Pro-Ject Tube Box S2 Black is a high-end phono preamp designed for MM and MC cartridges, featuring dual ECC83 tubes in a double mono layout for superior channel separation. Its fully discrete, low-noise circuit uses premium polystyrene capacitors and gold RCA connectors, housed in a vibration-resistant aluminum-metal chassis. Adjustable gain and a subsonic filter provide tailored sound control, making it a must-have for audiophiles seeking warm, detailed vinyl playback.

## Description

From the brand

Review: A lovely bit of kit... - Out of the box this little phono preamp sounded great. Lots of detail and warm overtones. The stock valves are ok but can definitely be upgraded. Note, for those interested the stock valves are JJ ECC83-S rebranded with the Projects own branding. These are a fine tube in their own right and certainly do the job. I had a couple of pairs of other valves in my collection to try for a bit of upgrading. My comparitive impressions were: Stock JJ: Very warm presentation definitely giving that tube sound, a rich bass with a smooth if maybe slightly rolled of treble. I can see why these were chosen as the stock valves. Tung Sol 12AX7: A more balanced sound across the range with better treble extension and detail, a tighter bass and generally more controlled presentation. I liked this setup very much. However... NOS Mullard ECC83 Short Grey Plate: I'm a bit of a fan boy of NOS Mullards already using them extensively throughout my system to be honest. So... Think all the good bits described with the tubes above all rolled up into a single valve and you get this. Balanced presentation throughout detailed highs and extended bass with a full lush midrange and that all important Mullard yummyness that draws you in. I'm not going to even bother trying the Shuguangs I have as I already know they won't even touch the stock valves. I think it would be interesting to hear it with some GE Jan as well but I only have one of those in my collection. So in all I'm very, very impressed and this was a worthwhile upgrade to my original Cambridge Audio CP1. The NOS Mullards really do elevate it as well so it's well worth giving them a try if you can get your hands on some. To setup correctly all you need to do is find out the preferred input impedance of your stylus and if you have an MC cart it's preferred input capacitance as well, flick a couple of tiny switches on the bottom of the device to set it to those settings (all covered in the instructions) and your all set. Personally, I prefer the Subsonic filter turned of as with it on it felt like the sound was kind of missing something.
Review: Amazing - This question is always asked which is better CD or vinyl ? well I can tell you if you get one of these there’s no competition. This will bring the best out of your vinyl records. The detail is so clear and precise and bringsI out things you haven’t heard before on your records Even though I have a very good system and it sounds fantastic. This has improved it even more. So I would highly recommending this to anyone looking to rediscover vinyl for the first time or even if you’re thinking of bring it out all your old records again to play. And it’s true vinyl does sound better than CDs

## Features

- Innovative pioneering phono tubes in miniature format with premium sound. Suitable for MM and MC pickups
- Very low noise circuit, complete discrete construction without op amp, polystyrene audiophile capacitors
- 2 ECC83 tubes (interchangeable), constructed in double mono for better channel separation
- Gold RCA inputs and outputs, front subsonic filter switch, front gain settings
- Aluminum and metal sandwich housing protects against vibration and electromagnetic interference

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B075KPB1P2 |
| Best Sellers Rank | 25,702 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 28 in Home Audio Preamplifiers |
| Item model number | Pro-Ject Tube Box S2 |
| Manufacturer | Pro-ject |

## Product Details

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

## Images

![Pro-Ject Tube Box S2 Black - Phono Preamp - Image 1](https://m.media-amazon.com/images/I/71-LwDsjtEL.jpg)
![Pro-Ject Tube Box S2 Black - Phono Preamp - Image 2](https://m.media-amazon.com/images/I/818UCAja3QL.jpg)

## Questions & Answers

**Q: Does anyone know the difference between this project pre amp and the one on this asin: b008msmgky    there is a £75 difference in price?**
A: Hello. 

Unfortunately, the ASIN you have provided, did not produce any search results, and so with the current information, we would be unable to offer any further assistance or recommendations. You can however, contact your local Pro-Ject distributor for further advice and assistance on this matter, and they will be more than happy to provide additional help in this matter. 

I hope this helps.

**Q: Can I use this to improve phono stage on existing amp or should it be routed through aux input**
A: Hi, thanks for your question. You should connect the phono stage to an aux (sometimes known as 'line' input). Kind Regards,

**Q: I think the pre amp on the phono input on my marantz  amp has failed. could i use this through the tuner input on the amp to play vinyl ?**
A: Yes you certainly can. So record player into Project phono stage then RCA cables from Project into Aux or tuner input on your Marantz amplifier. I'd also be surprised if the Project phono stage doesn't perform better than the phono input on your amplifier.

**Q: Is this as simple as replacing this with my existing project MM ?**
A: Hello, Thank you for your enquiry. 

Yes, you should just be able to put this in your system in place of the MM, connecting the cables over and adjusting the cartridge settings accordingly. 

I hope this helps.

## Customer Reviews

### ⭐⭐⭐⭐⭐ A lovely bit of kit...
*by R***O on 25 January 2020*

Out of the box this little phono preamp sounded great. Lots of detail and warm overtones. The stock valves are ok but can definitely be upgraded. Note, for those interested the stock valves are JJ ECC83-S rebranded with the Projects own branding. These are a fine tube in their own right and certainly do the job. I had a couple of pairs of other valves in my collection to try for a bit of upgrading. My comparitive impressions were: Stock JJ: Very warm presentation definitely giving that tube sound, a rich bass with a smooth if maybe slightly rolled of treble. I can see why these were chosen as the stock valves. Tung Sol 12AX7: A more balanced sound across the range with better treble extension and detail, a tighter bass and generally more controlled presentation. I liked this setup very much. However... NOS Mullard ECC83 Short Grey Plate: I'm a bit of a fan boy of NOS Mullards already using them extensively throughout my system to be honest. So... Think all the good bits described with the tubes above all rolled up into a single valve and you get this. Balanced presentation throughout detailed highs and extended bass with a full lush midrange and that all important Mullard yummyness that draws you in. I'm not going to even bother trying the Shuguangs I have as I already know they won't even touch the stock valves. I think it would be interesting to hear it with some GE Jan as well but I only have one of those in my collection. So in all I'm very, very impressed and this was a worthwhile upgrade to my original Cambridge Audio CP1. The NOS Mullards really do elevate it as well so it's well worth giving them a try if you can get your hands on some. To setup correctly all you need to do is find out the preferred input impedance of your stylus and if you have an MC cart it's preferred input capacitance as well, flick a couple of tiny switches on the bottom of the device to set it to those settings (all covered in the instructions) and your all set. Personally, I prefer the Subsonic filter turned of as with it on it felt like the sound was kind of missing something.

### ⭐⭐⭐⭐⭐ Amazing
*by M***P on 21 January 2025*

This question is always asked which is better CD or vinyl ? well I can tell you if you get one of these there’s no competition. This will bring the best out of your vinyl records. The detail is so clear and precise and bringsI out things you haven’t heard before on your records Even though I have a very good system and it sounds fantastic. This has improved it even more. So I would highly recommending this to anyone looking to rediscover vinyl for the first time or even if you’re thinking of bring it out all your old records again to play. And it’s true vinyl does sound better than CDs

### ⭐⭐⭐⭐⭐ Nice Sound
*by A***R on 5 October 2025*

Lovely pre amp

## 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 Argentina*
*Store origin: AR*
*Last updated: 2026-03-01*