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Pro-Ject Head Box S2 - Audiophile Headphone Amplifier The Pro-Ject Head Box S2 is a premium audiophile headphone amplifier delivering class-leading sound quality and practical design. Ideal for headphones with low or high impedance, it significantly improves audio performance compared to standard headphone outputs. Key Features Audiophile-grade headphone amplifier 6.3mm jack input on the front panel Compatible with low and high impedance headphones Full metal housing for interference protection RCA stereo input and RCA stereo loop-out On/Off switch conveniently located on the front Available with silver or black faceplates Best-buy award winner Delivers natural dynamics, transparency and pure audiophile enjoyment Product Description The Head Box S2 combines rich, colourful sound presentation with a practical configuration, making it a perfect upgrade over conventional headphone connections found on integrated amplifiers. It connects easily via the record output of your amplifier, and the integrated loop-out ensures you retain connectivity to your recording devices. Equipped with high-quality amplifier modules, the Head Box S2 guarantees the best possible headphone amplification, making listening to your favourite music a true pleasure. Its full metal housing protects against interference, ensuring clean and clear audio reproduction. Specifications For detailed specifications, please refer to the official Pro-Ject Head Box S2 specifications PDF .