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Pro-Ject Stereo Box E: Compact Hi-Fi Stereo Amplifier with Multiple Connections
The Stereo Box E from Pro-Ject redefines what can be expected from an ultra-compact integrated amplifier in the entry-level Hi-Fi range. Designed for those who want to step into audiophile sound without sacrificing versatility, this model delivers elegant design, full connectivity, and a sonic quality that far exceeds its price category.
Audiophile sound made accessible
Where other budget amplifiers compromise quality for features, the Stereo Box E employs a carefully designed analog circuit that prioritizes clarity, musicality, and realism in every playback. Its fully analog preamp preserves signal purity, while the low-noise power stage delivers dynamic, engaging sound with a surprisingly wide soundstage for such a compact chassis.
Unlimited connectivity
The Stereo Box E is conceived as the hub of any modern Hi-Fi system:
Analog inputs: 1 × MM phono input for moving magnet cartridges, 1 × RCA line input, 1 × 3.5 mm aux input.
Digital inputs: 2 × optical, 1 × coaxial SPDIF for easy connection to TVs, players, or consoles.
Bluetooth 5.0 aptX HD: high-definition wireless streaming from smartphones, tablets, or PCs.
USB-C output: powers modern streamers without a separate supply.
Dedicated subwoofer output: perfect for 2.1 setups.
Compact and elegant design
At just 206 mm wide and 51 mm high, this amplifier fits into any space yet provides enough power to drive bookshelf or floorstanding speakers. Its steel chassis with brushed aluminum front panel ensures durability and excellent shielding against external interference. Available in black or silver, it pairs seamlessly with other Pro-Ject components such as the CD Box E or Tuner Box S3 DAB+.
Flexible use
Private listening: 6.3 mm headphone output with automatic switching between speakers and headphones.
Remote control included: easily adjust volume and inputs.
Modular compatibility: integrates with Pro-Ject’s Box Design series for customizable, upgradable systems.
Technical Specifications
Output power: 2 × 21 W / 40 W at 8 / 4 ohms (1% THD)
Frequency response (20 Hz–20 kHz): < (-0.3 dB; -2.5 dB) at 4 ohms
Signal-to-noise ratio: 90 dB (A-weighted)
Channel separation: 60 dB at 1 kHz
THD: < 0.12% at 5 W / 4 ohms
Gain: 25 dB
Analog inputs: 1 × MM phono (RCA with ground), 1 × RCA line, 1 × 3.5 mm jack
Digital inputs: 2 × optical, 1 × coaxial SPDIF
Bluetooth: 5.0 aptX, aptX HD, A2DP profile
Outputs: 1 × RCA subwoofer, speaker terminals (4 mm banana, spade, or bare wire)
Headphone output: 6.3 mm jack
Power supply: 20 V / 3 A DC, 100–240 V, 50/60 Hz
Standby consumption: < 0.5 W
Dimensions (W × H × D): 206 × 51 × 115 (186) mm
Weight: 2 kg (without power supply)