Pro-Ject Head Box E Headphone Amplifier Pro-Ject Audio Systems was the original inventor of micro high-end products back in the 90s. Our phono preamps, DACs, amps, and headphone amps have become legendary. Despite its compact size, the Head Box E stands tall in the crowded field of budget headphone amplifiers. While many competitors in this price range rely on cheap integrated chip-based designs that lack power and offer poor low-impedance output, the Head Box E uses fully discrete electronics laid out on a carefully engineered circuit board. The result? Impressive power, clean measurements, and long-term reliability. Its maintainable, serviceable design also gives it a long product life — making it a smart investment for audio enthusiasts who care about .
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