The Pro-Ject Pre Box S2 Digital - Edition 23 is a compact digital micro preamplifier that offers an enhanced audio performance, supporting MQA and DSD512 formats. This edition, released in 2023, builds upon the success of the original model from 2017, which gained popularity among audio enthusiasts for its superior sound quality at an accessible price. Key improvements include a new internal power supply design, redesigned master audio clocks that reduce phase noise, and a revamped analog output stage featuring a higher Class-A current for better compatibility with low-impedance headphones. It also has an energy-efficient design with a notable reduction in power supply unit (PSU) consumption, benefiting portable usage. The device is handmade in Europe, emphasizing technological innovation while minimizing the cabinet size to allocate more resources to high-quality PCB design. It includes dual differential ESS DACs, multiple selectable digital filter options, and a headphone amplifier capable of delivering high output power and low distortion. Overall, the Pre Box S2 Digital - Edition 23 continues to set a high standard for compact audio devices.
