PRO-JECT Head Box S3 B
Head Box S3 B
Fully balanced high end headphone amplifier
Made In Europe
The Head Box S3 B is a high-performance headphone amplifier built around a unique, fully balanced topology that redefines what is possible in its price class. Designed for audiophiles who demand surgical clarity, precision, and flexibility, it supports both balanced and single-ended headphones and integrates seamlessly into modern desktop and hi-fi systems.
Designed with the overarching goal to find the perfect balance between output power and perceived sound quality the Head Box S3 B sets new standards in its price range.
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Every aspect of its design prioritizes sonic purity, from the carefully optimized signal path to the discreet, low-noise components that minimize distortion and preserve the finest details of any recording.
Fully Balanced Power
The Head Box S3 B features a fully balanced signal chain for both RCA and XLR inputs, ensuring maximum channel separation and minimal noise. Balanced headphone connections are available via 4.4 mm Pentaconn and XLR outputs, while single-ended headphones are supported through 3.5 mm and 6.3 mm outputs.
Premium Casework
High quality full aluminium
The amplifier is housed in a premium, full aluminium enclosure that provides both mechanical stability and effective shielding.
Made in EU
Precise manufacturing - long-term reliability
Made in Europe by technicians, engineers and designers with decades of experience. Expert craftsmanship. Sustainable products with a long lifetime. Audiophile audio performance.
https://www.project-audio.com/en/product/head-box-s3-b/
https://lyreaudio.gr/wp-content/uploads/2026/03/Head-Box-S3-B-Userguide.pdf
