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Estimated price (community-sourced)
Around — community and catalog average, updates slowly
The Pro-Ject Pre Box S2 Digital is a high-performance digital micro preamplifier renowned for punching above its price point since 2017. The 2023 Edition 23 features improvements including redesigned master audio clocks for jitter below 100 femtoseconds, enhanced internal power supply, higher Class A current in the analog output stage, and a more powerful headphone output with lower distortion for low-impedance headphones. It employs dual-mono circuitry with two ESS9038Q2M 32-bit DACs, proprietary clock design, organic polymer capacitors, thin-film miniMELF resistors, gold-plated four-layer PCB, and a full aluminum/steel chassis. Supports full hardware MQA decoding, 7-8 selectable digital filters including one proprietary optimum transient filter, and synchronization of internal oscillators. Includes remote control. Handmade in Europe.
DAC capabilities and digital audio processing
Analog signal output specifications
Input and output connections
Size, weight, and appearance
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
Components that show up alongside the Pre Box S2 in real systems. A verdict means the pair has been checked for compatibility and headroom — open it to see how the two get along.
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The DacMagic 200M's signal-to-noise is 115 dB against the Pre Box S2's 124 dB and its thd 0.001% against 0.000%. Both share bit depth (32-bit) and max sample rate (768 kHz).
Both turn up in the same documented systems.
The DO200 MKII's signal-to-noise is 128 dB against the Pre Box S2's 124 dB. Both share bit depth (32-bit), max sample rate (768 kHz), and thd (0.000%).
The Pre Box S2 MQA DAC/Preamp matches the Pre Box S2 on bit depth (32-bit), max sample rate (768 kHz), signal-to-noise (124 dB), and thd (0.000%).
The DO400's signal-to-noise is 133 dB against the Pre Box S2's 124 dB. Both share bit depth (32-bit), max sample rate (768 kHz), and thd (0.000%).
Pre-Box S2
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