Pro-Ject Audio Systems, an Austrian brand renowned for its audio equipment, has announced the release of two new fully balanced headphone amplifiers: the Head Box S3 B and Head Box DS3 B. These models represent the first in a refreshed series of their long-running electronics range, previously known as Box Design. The core innovation lies in their 'truly fully balanced' circuitry, which goes beyond just balanced connectors to maintain a balanced signal path from start to finish. This design aims to significantly reduce noise and enhance channel separation, delivering a cleaner, more detailed, and spacious sound experience. The Head Box S3 B is priced at £329 / €399, while the more powerful Head Box DS3 B retails for £629 / €699. These price points position the new amplifiers as accessible options for audiophiles seeking to experience fully balanced sound without a prohibitive investment. Both units are equipped with balanced headphone outputs for 4.4mm Pentaconn and XLR connections, alongside line-level inputs via RCA and XLR, ensuring broad compatibility with various source devices and headphones. The Head Box DS3 B further distinguishes itself with a fully discrete amplifier design, providing extra warmth and power, especially beneficial for driving harder-to-drive headphones with low sensitivity. Manufactured in the EU and featuring robust all-metal enclosures, these amplifiers underscore Pro-Ject's commitment to quality and aim to provide a substantial audio upgrade for music enthusiasts.