Studio Incar LogoStudio Incar LogoStudio Incar Logo
0 £0.00

Pro-Ject Amp Box S3 - Stereo Power Amplifier


In StockIn StockOut of Stock
VAT included. Shipping calculated at checkout.

Colour: Black

  • Black
  • Silver
Back In Stock on - [19041994]
Out of Stock
Order in the next for delivery by hoursminutes

visamastermaestroamerican expresspaypalapple paygoogle payshopify payklarna
Trustpilot Image

The new Pro-Ject Amp Box S3 offers one stereo RCA input and delivers powerful and room-filling sound to every loudspeaker. The new PCB concept & sophisticated topology achieves less distortion and a better signal to noise ratio.

Pro-Ject designed this amp to match the sound characteristics of a tube amplifier as close as possible. The Amp Box S3 brings you a rich and musical sound with an analogue touch of warmth into your living room. It is also the perfect solution for your desktop nearfield monitor speakers due to its size and superior spacious sound stage.

If you want to use a bi-or tri-amplification setup, you can use the trigger outputs to connect further power amplifiers.

Outstanding quality made in Europe.

The Amp Box S3 comes in a simple luxurious design with a stable housing made of aluminium, which effectively protects against interferences and vibrations. With its clean and beautiful finish Amp Box S3 will fit into every HiFi setup. If your setup requires the amp to be hidden, it is easily done due to its small size.

Application Examples:

  • HiFi Amplifier for 10-15 m2 rooms
  • Audiophile desktop nearfield monitor amp
  • Streamer power amp upgrade
  • Multiroom power amp solution
  • Home cinema power amp upgrade
  • In-wall or celing speaker amp

Pro-Ject Amp Box S3 - Product Features

  • NEW PCB concept & sophisticated topology
  • NEW lower distortion & better SNR
  • Ultra compact & audiophile
  • Advanced amplifier module
  • Stereo input (RCA)
  • Isolated speaker sockets
  • Suitable for Banana/Spade/Pin/bare wire
  • Trigger input
  • Trigger output for further Amp Box S3
  • Metal casing protects against vibration and interference
  • On/Off front-sided

Technical Specifications

  • Power Output: 2 x 23 W / 40 W at 8 ohms / 4 ohms
  • Peak Power: 2 x 50 W at 4 ohms
  • Frequency Response: 20Hz - 20kHz (- 0,7dB / 4 ohms)
  • Channel Separation: > -68 dB @ 20kHz
  • Signal-to-noise Ratio: 87dBV (100dBV-"A" weighted)/4ohms
  • THD: < 0.02% @ 10W / 4 ohms
  • Gain: 31 dB
  • Input: 1 pair RCA sockets
  • Input Impedance: 25 kohm
  • Speaker Sockets: 4mm Ø Banana, spades. pins or bare wire
  • Trigger: 12V DC In & Out, 2-pole jack socket Ø 2.5mm
  • Power Supply: 20V/3A DC (universal power supply)
  • Dimensions W x H x D: 103 x 36 x 118mm
  • Weight: 385g without Power Supply

Further Information

Pro-Ject Amp Box S3 - User Manual

Pro-Ject Amp Box S3 - Product Information


We offer Free Delivery on orders to the UK Mainland over £100.


Our staff are passionate about what they do and can provide advice and assistance on your purchase.


You can return any unwanted and unused item within 30 days and get a full refund.


Orders can be placed on our fully SSL-secured checkout with Debit / Credit Cards or via PayPal, Apple Pay and Google Pay. 

The products we use and sell are of the highest quality and we trust them wholeheartedly, but every now and again a product has a fault that is covered under the manufacturers warranty.

In the event of such an occurance please contact us via email at to proceed with the warranty process.

Below is a list of all the Manufacturers warranty timeframes with any special instructions for extended warranties:


  • 1 Year Standard Manufacturers Warranty


  • 5 Years standard Manufacturers Warranty


  • 5 Years with Installation by an Authorised Installer (Studio Incar is an Authorised Installer)
  • 1 Year if you are doing your own Installation
  • 2 Years if you register the product with the UK supplier


  • 2 Years standard Manufacturers warranty


    • 1 Year standard Manufacturers warranty
    • 2 Years if you register the product with the UK supplier


    • 90 Days Standard Manufacturers Warranty
    • 3 Years Extended Warranty - Product Registration within 30 days of Purchase


    • 6 Months standard Manufacturers warranty


    • 1 Year standard Manufacturers warranty

    Chord Company

    • Lifetime Warranty


    • 2 Years on Car Audio Products - No Extendable Warranty
    • 2 Years standard Warranty on Home Audio Products
    • up to 8 Years Extendable Warranty on Home Audio Products when you register at Dynaudio


    • 1 Year Standard Manufacturers Warranty
    • 2 Years Extended Warranty when registered with Focal


    • 2 Years Standard Manufacturers Warranty


    • 1 Year standard Manufacturers warranty
    • 2 Years if you register the product with the UK supplier

    HiFi Rose

    • 2 Years Standard Manufacturers Warranty

    iFi Audio

    • 1 Year Standard Manufacturers Warranty

    JL Audio

    • 1 Year for Speakers and Subwoofers
    • 2 Years for Amplifiers and Processors


    • 3 Years Standard Manufacturers Warranty


    • 1 Year Standard Manufacturers Warranty

    Peachtree Audio

    • 2 Years Standard Manufacturers Warranty
    • 3 Years Extended Warranty if Registered with Peachtree


    • 2 Years Standard Manufacturers Warranty
    • 3 Years Extended Warranty if Registered with Pro-Ject


    • 4 Years for Passive Loudspeakers
    • 1 Year for Active Loudspeakers / Subwoofers
    • 5 Years for Passive Loudspeakers if Registers with Q Acoustics
    • 2 Years for Active Loudspeakers / Subwoofers if Registered with Q Acoustics


    • 1 Year Standard Manufacturer Warranty


    • 1 Year Standard Manufacturer Warranty


    • 2 Years Standard Manufacturers Warranty
    • 3 Years Extended Warranty if registered with Wharfedale
    Not enough items available. Only [max] left.