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The Pro-Ject Pre Box S2 Digital is a compact digital micro preamplifier that delivers high-resolution audio performance. Utilizing dual ESS9038Q2M 32-bit DACs, it supports PCM audio up to 32-bit/768kHz and DSD512, ensuring detailed and accurate sound reproduction. The device features three digital inputs—USB-B, coaxial, and optical—providing versatile connectivity options. With its dual-mono construction and proprietary clock circuitry design, the Pre Box S2 Digital achieves low jitter levels, enhancing audio clarity. The inclusion of MQA hardware decoding allows for studio-quality sound, making it a versatile addition to any audiophile's setup.

Key Features

  • Dual ESS9038Q2M 32-bit DACs for high-resolution audio
  • Supports PCM up to 32-bit/768kHz and DSD512 formats
  • MQA hardware decoding for studio-quality sound
  • Three digital inputs: USB-B, coaxial, and optical
  • Dual-mono construction with proprietary clock circuitry design
  • Compact design with a full aluminum/metal casing

Why Buy

The Pro-Ject Pre Box S2 Digital offers audiophiles a high-value DAC and digital preamp with exceptional sound quality. Its advanced features and compact design make it an excellent choice for those seeking to enhance their digital audio experience without compromising space or budget.

  • High-fidelity audio with support for various high-resolution formats
  • Versatile connectivity options for seamless integration into existing setups
  • Compact and durable design suitable for any audio environment

Product Specifications

Digital Inputs 1x USB-B, 1x Coaxial (RCA), 1x Optical (TOSLink)
D/A Converter 2x ESS9038Q2M 32-bit
Supported Formats (USB) PCM up to 32-bit/768kHz, DSD64, DSD128, DSD256, DSD512, MQA
Supported Formats (Optical & Coaxial) PCM up to 24-bit/192kHz
Filter Settings 8 selectable digital filters
Frequency Response 20Hz – 20kHz
Analog Outputs 1x RCA (variable), 1x 6.3mm Headphone Out (front)
Output Voltage 2.05 V
Headphone Output Power 6.6mW/600ohms, 68mW/32ohms
THD 0.0003% at 0dB, 2V RMS, 1kHz
Dynamic Range 124dBA
Dimensions (W x H x D) 103 x 37 x 122 mm
Weight 366 g
Power Supply 5V/1A DC (included)

Pro-Ject Pre Box S2 Digital - High-Resolution DAC & Preamplifier - Open Box FAQs

Does the Pro-Ject Pre Box S2 Digital support MQA decoding through its coaxial input?

The Pro-Ject Pre Box S2 Digital supports MQA hardware decoding via its USB input. However, MQA decoding through the coaxial input is not supported.

Can the OLED display on the Pro-Ject Pre Box S2 Digital be turned off to extend its lifespan?

The OLED display on the Pre Box S2 Digital cannot be turned off. Some users have expressed concerns about the display's lifespan due to continuous operation. To mitigate potential wear, it's recommended to power off the unit when not in use.

Is an external power supply necessary for optimal performance of the Pro-Ject Pre Box S2 Digital?

The Pro-Ject Pre Box S2 Digital includes a preamplifier, headphone amplifier, display, and MQA support. In contrast, the DAC Box S2+ lacks these features, serving solely as a digital-to-analog converter without preamp capabilities or MQA decoding.

What is the difference between the Pro-Ject Pre Box S2 Digital and the DAC Box S2+?

The Pro-Ject Pre Box S2 Digital includes a preamplifier, headphone amplifier, display, and MQA support. In contrast, the DAC Box S2+ lacks these features, serving solely as a digital-to-analog converter without preamp capabilities or MQA decoding.