In this Pro-Ject - DAC Box S2 Plus Review, we delve into the nuances of Pro-Ject’s exceptional DAC Box S2 Plus digital-to-analogue converter. Perfect for discerning audiophiles craving pristine digital playback, this compact powerhouse supports PCM up to 32bit/768kHz and DSD256, offering transformative audio fidelity. Explore how the ESS Sabre ESS9038 DAC, proprietary clock circuitry and selectable digital filters elevate your listening experience. To discuss how this unit can enhance your system, call our team or email us today.

Design & Build Quality

The DAC Box S2 Plus sports a sleek aluminium casing that combines aesthetic minimalism with robust vibration damping. At just 103 x 37 x 122 mm, its compact footprint belies the performance inside. The anodised metal chassis not only looks superb in any rack but also shields sensitive circuits from RFI and mechanical resonance.

Core Technologies & Sound Performance

ESS Sabre ESS9038K2M DAC Chip

At the heart of the DAC Box S2 Plus lies the ESS9038K2M Sabre DAC, renowned for its ultra-low distortion and wide dynamic range. Delivering THD as low as 0.0007% and dynamic range up to 120 dB, this chipset ensures that every transient and harmony is reproduced with pinpoint accuracy and musicality.

Advanced Clocking & Jitter Control

Proprietary clock circuitry synchronises all internal oscillators, yielding jitter levels as low as 100 femtoseconds. This translates into a stable, noise-free soundstage with enhanced spatial resolution—ideal for critical listening sessions.

Selectable Digital Filters

Tailor the DAC’s sonic signature using five onboard digital filters, including a proprietary optimum transient filter for refined attack and decay. Whether you prefer a neutral, analytical tone or a slightly warm, engaging presentation, these filters let you shape the output to suit your taste.

Connectivity & Compatibility

The DAC Box S2 Plus is fully equipped for modern sources:

• USB (B) input up to PCM 32/768 and DSD256 (DoP)
• Coaxial S/PDIF input supporting PCM up to 24/192
• Optical TOSLink input supporting PCM up to 24/192

USB noise suppression employs dual-stage filtering to eliminate jitter-inducing interference, ensuring transparent data transfer from your PC or streamer. The coaxial input is a perfect companion to digital transports like the CD Box DS2 T, making the DAC Box S2 Plus a versatile hub in any hi-fi rig.

Who Should Consider the Pro-Ject DAC Box S2 Plus?

This DAC is a no-compromise solution for:

• Enthusiasts upgrading from entry-level DACs seeking high-resolution playback
• Owners of digital transports (CD spinners, network streamers) demanding low jitter performance
• Studio professionals requiring precise, reference-grade conversion for mixes
• Anyone building a compact but powerful desktop audio setup

Pros and Cons

• Pros:
  • Exceptional dynamic range (120 dB) and ultra-low THD (0.0007%)
  • Supports PCM up to 32bit/768kHz and DSD256 for future-proof playback
  • High-quality ESS Sabre DAC with jitter as low as 100 femtoseconds
  • Five selectable filters for personalised sound tailoring
  • Compact, durable aluminium chassis with RFI shielding
  • Triple digital inputs for complete source flexibility
• Cons:
  • Single-ended RCA outputs only (no balanced outputs)
  • Relies on an external 5V/1A power supply (included)

Elevate Your Digital Audio Setup

The Pro-Ject DAC Box S2 Plus is a powerhouse in miniature form, delivering reference-quality conversion in a sleek, user-friendly package. Whether you’re streaming high-res files, spinning CDs, or crafting studio-grade mixes, this DAC transforms digital sources into engaging, lifelike audio. To integrate this audiophile gem into your setup, call 1300 308 711 or drop us an email. Our team at The Audio Tailor is passionate about tailoring the perfect sound solution for your needs and space.