ProJect Tube Box DS3 B True Balanced Phono Preamplifier

A Comprehensive Overview

The ProJect Tube Box DS3 B is a high-quality phono preamplifier designed for audiophiles seeking exceptional sound performance and versatility. Known for its innovative features and tube-based amplification, this device offers a unique blend of modern connectivity and classic analog warmth.

Key Features

• True Balanced Connectivity: The Tube Box DS3 B introduces balanced connections for both input and output, a first in ProJect’s phono stage lineup. It includes standard XLR connectors and 5-pin mini XLR options, alongside traditional RCA inputs/outputs. This allows users to connect two turntables or a turntable with dual tonearms simultaneously, selectable via an input switch on the front panel.
• User-Friendly Adjustments: The unit provides switches for gain adjustment (40-65dB in 5dB steps), loading options, and a subsonic high-pass filter. A standout feature is the continuously variable impedance control via a rotary dial, enabling precise tuning for low-output moving coil cartridges. Moving magnet users can select the standard 47k ohms setting with four capacitance options available.
• Tube Amplification: Equipped with two E88CC valves, the Tube Box DS3 B delivers warm, harmonically rich sound while maintaining clarity and detail. The tubes are partially visible through the top plate, adding aesthetic appeal while ensuring proper ventilation.
• Modern Integration: A 12v trigger control allows seamless power synchronization with other Pro-Ject Box components. Stored settings remain intact after powering down, ensuring convenience during use.

Performance Highlights

The Tube Box DS3 B excels in delivering smooth yet detailed sound reproduction:

1. Warm Sound Signature: Its tube-based design avoids harshness often associated with solid-state amplifiers while retaining clarity and precision.
2. Dynamic Range: It handles complex recordings like Bob Dylan’s Blonde On Blonde or Lee Morgan’s The Sidewinder with ease, offering natural tonal balance without sacrificing musicality.
3. Stereo Imaging & Depth: The device provides excellent channel separation and an expansive soundstage, making it ideal for stereo recordings like Weyes Blood’s And In The Darkness, Hearts Aglow.
4. Noise Control: While not completely silent due to its valve design, noise levels are minimal even at higher gain settings.

Design Considerations

While the Tube Box DS3 B lacks a mono switch—a useful feature for reducing groove noise on mono recordings—it compensates with its ability to accommodate multiple cartridges and turntables effectively. Its build quality is robust, though some may consider upgrading the bundled wall-wart power supply for enhanced performance.

Conclusion

The ProJect Tube Box DS3 B True Balanced Phono Preamplifier is an outstanding choice for vinyl enthusiasts seeking premium sound quality at a competitive price point. Its combination of balanced connectivity, user-friendly adjustments, and tube amplification ensures it stands out among competitors in its class.

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