Pro-Ject Headbox DS3B Headphone Amplifier Overview Pro-Ject understands that modern headphones demand more than just raw power. Consequently, the Pro-Ject Headbox DS3B Headphone Amplifier arrives as a sophisticated solution for the most discerning listeners. This fully balanced headphone amplifier moves beyond simple circuitry to offer a truly high-end experience. It features a discrete hardware design that avoids standard op-amps entirely. By using individual components, the engineers have achieved a sound that is both natural and remarkably vivid. Performance The amplifier delivers a massive 1.5W of power into 30 ohms to drive even the most demanding planar magnetic designs. Because the signal path is truly symmetrical from input to output, background noise is almost non-existent. You will notice a significant increase in dynamic range when using the balanced 4.4mm or XLR connections. Furthermore, the discrete topology ensures that every musical detail remains intact. This approach provides a sense of authority and warmth that integrated chips rarely match. Connectivity Flexibility remains a core strength of this compact powerhouse. Users can connect various sources via the balanced XLR or unbalanced RCA inputs located on the rear. Additionally, the front panel offers both a 6.35mm jack and a balanced 4.4mm Pentaconn output for maximum compatibility. Transitioning between different headphones is effortless thanks to the precise volume control and high-quality switching. The solid aluminium chassis also serves a dual purpose by protecting against electromagnetic interference. Craftsmanship Every unit is carefully handmade in Europe to ensure lasting reliability and performance. The heavy steel and aluminium casing feels incredibly robust and premium to the touch. Moreover, the minimalist aesthetic fits perfectly into any contemporary desktop setup or hi-fi rack. If you wish to customise the appearance, magnetic wooden side panels are available separately. This amplifier represents a serious investment in audio quality for those who value clarity above all else. Feature Specification Power Output 2 x 1.5W @ 30 Ω (Balanced) Frequency Response 20Hz - 20kHz (± 0.1dB) Signal to Noise Ratio 113dB (A-weighted) THD N < 0.0005% Inputs 1 x Pair XLR, 1 x Pair RCA Headphone Outputs 1 x 4-pin XLR, 1 x 4.4mm Pentaconn, 1 x 6.35mm Jack Output Impedance < 0.25 Ω Power Supply 18V / 2.5A DC Dimensions (W x H x D) 206 x 71 x 205 mm Weight 1.5 kg (without power supply)
