Pro-Ject Stereo Box E black

The Pro-Ject Stereo Box E is a compact integrated stereo hi-fi amplifier designed to deliver high-quality audio performance in a minimalist format. This model aligns with Pro-Ject’s philosophy of offering affordable audio solutions without compromising on sound quality.

A Powerhouse in a Compact Design

The Stereo Box E stands out with its ultra-compact size, making it ideal for small spaces or for those seeking a discreet solution. Despite its small footprint, this integrated amplifier delivers 2 x 50 W of power at 4 ohms, sufficient to efficiently drive most bookshelf speakers and even some medium-sensitivity floor-standing speakers.

The device features a sleek design with a robust metal chassis available in a black finish. The minimalist front panel includes only a volume knob and an input selector button, ensuring intuitive operation. This simplicity makes it an excellent choice for beginner audiophiles or those who prefer a no-frills approach to their audio system.

Modern Amplification Technology for Pure Sound

At the heart of the Stereo Box E is a Class D amplification module. Renowned for its energy efficiency and low heat generation, this technology enables high power output in a compact form. Pro-Ject has optimized this module to deliver dynamic and detailed sound with excellent control across the entire frequency range.

The amplifier also features a high-quality switching power supply, designed to provide stable and responsive current—essential for accurately reproducing fast transients and complex musical passages. This technological combination aims to deliver clear, precise, and musical sound, satisfying even demanding audiophiles despite the product’s affordable positioning.

Versatile Connectivity for Easy Integration

Despite its compact size, the Stereo Box E does not skimp on connectivity. The amplifier includes two RCA line inputs, allowing you to connect various analog sources such as a CD player, tuner, or the output of an external digital-to-analog converter. This versatility makes it easy to integrate the Stereo Box E into an existing hi-fi system or build a complete setup around it.

The speaker output terminals support bare wires, spade connectors, or banana plugs, offering appreciated flexibility for speaker connections. While it lacks a built-in phono input, requiring an external phono preamp for vinyl enthusiasts, this design choice helps maintain signal purity by avoiding additional circuitry in such a compact space.

A Central Component for a Compact Hi-Fi System

The Stereo Box E fits perfectly within Pro-Ject’s “E” series, designed to offer complete and affordable audio solutions. It can be paired with other products from the brand, such as the CD Box E or the Phono Box E preamp, to create a complete and cohesive hi-fi system, both aesthetically and sonically.

This modular approach allows users to gradually build their audio system according to their needs and budget while benefiting from optimal synergy between the components. The Stereo Box E can evolve from a simple amplifier for active speakers to the central hub of a sophisticated hi-fi system.

A Musical Experience Focused on Neutrality

In terms of sound, the Stereo Box E emphasizes neutrality and transparency. The amplifier strives to faithfully reproduce the input signal without excessive coloration, allowing users to enjoy their recordings as they were intended.

The soundstage is generally well-defined, with good instrument separation and precise stereo imaging. The midrange is particularly well-rendered, providing excellent presence for vocals and acoustic instruments. While the bass does not reach extreme depths due to the device’s size limitations, it remains well-controlled and defined.

Frequently Asked Questions

Is the Stereo Box E suitable for powering large speakers?
While capable of efficiently driving most bookshelf speakers, the Stereo Box E may show its limits with large or low-sensitivity speakers, especially in large spaces. It is best paired with medium to high-sensitivity speakers for optimal performance.

Can the Stereo Box E be used with a turntable?
The Stereo Box E does not include a built-in phono input. To use a turntable, you will need to add an external phono preamp between the turntable and one of the Stereo Box E’s line inputs.

What is the power consumption of the Stereo Box E?
Thanks to its Class D amplification technology, the Stereo Box E is highly energy-efficient. Its standby power consumption is very low, and even at normal listening levels, it remains moderate, making it an eco-friendly and economical choice for daily use.

Technical Specifications

Audio

• Power Output: 2 × 21 W (8 Ω), 2 × 40 W (4 Ω) at 1% THD
• Frequency Response (20 Hz - 20 kHz): < (-0.3 dB; -2.5 dB) under 4 Ω
• Signal-to-Noise Ratio: 90 dB (A-weighted)
• Channel Separation: 60 dB at 1 kHz
• Total Harmonic Distortion (THD): < 0.12% at 5 W under 4 Ω
• Gain: 25 dB

Wireless Features

• Bluetooth 5.0
• Compatibility: aptX, aptX HD, A2DP profile

Build

• Brushed aluminum front panel and buttons
• Anti-interference steel casing
• Gold-plated RCA connectors
• Isolated speaker outputs
• Analog volume control (motorized potentiometer)
• Available colors: black, silver

Connectivity

• 3 Analog Inputs:
  • 1 × MM phono with grounding screw
  • 1 × RCA
  • 1 × 3.5 mm mini-jack
• 3 Digital Inputs:
  • 2 × Optical
  • 1 × Coaxial S/PDIF
• USB-C Output for streaming devices
• Subwoofer Output (RCA)
• Speaker Outputs: 4 mm banana plugs, spade lugs, bare wire

General Specifications

• Power Supply: 20 V / 3 A DC, 100-240 V, 50/60 Hz
• Standby Power Consumption: < 0.5 W
• Dimensions (W × H × D): 206 × 51 × 115 (186) mm
• Weight: 2 kg (without power supply)
• Includes Control it 1 remote control