The Pro-Ject CD Box RS is a high-end transport engineered to extract audiophile-grade data from compact discs. It uses special Sonic Scrambling technology with via a “Sonic2” output stage (RJ45). An I²S bus is used to communicate PCM audio data between integrated circuits. The I²S bus separates clock and serial data signals, resulting in significantly lower jitter levels compared to other communication principles that extract the clock signal from the data stream.

Sonic Scrambling technology improves linearity in multi-DAC designs significantly. 2 DACs per channel in differential mode are used to reduce DAC-related distortion and enhance low-level signal linearity for superior conversion. Even the most subtle detail will be available to your ears sans audible distortion. To use Sonic Scrambling technology, it is necessary to connect both the RJ45 and BNC (clock cable) outputs to DAC Box RS or Pre Box RS Digital from Pro-Ject Audio Systems. Additionally, the following digital outputs are provided: AES/EBU (XLR), Toslink (optical) & coaxial (S/PDIF).

Additional information
Weight3 kg
Dimensions21 × 20.6 × 7.2 cm



  • Toploading CD drive with aluminium cover plate
  • Magnetic clamp
  • Plays CD Audio, CD-R, CD-RW, Hybrid SACD
  • Plays formats: .wav, .flac (up to 24/96), .wma, .mp3
  • Blue Tiger 100 Servo system
  • Sonic Scrambling technology via I²S interface
  • I²S interface with RJ45 connection and BNC clock input for ultra low jitter
  • Full colour LCD screen displays time, tracks, text (if available)
  • Gravity design with central mass point
  • IR remote included
  • Available in silver or black finish
  • Handmade in Europe


  • Supports: CD (including CD text), CD-R, CD-RW (finalized) and Hybrid-SACD
  • Supported audio formats: MP3, WMA 24/96 and FLAC (ISO 9660, Joliet), no DRM support
  • Upsampling: 88,2kHz, optical, coaxial and balanced digital outputs 176,4kHz, Out Sonic
  • Clock in: BNC socket, 16.9344MHz*
  • 1 x co-axial (S/PDIF)
  • 1 x balanced (AES/EBU)
  • 1 x optical (TOSlink®)
  • 1 x Out Sonic (I2S* – RJ45 socket)*
  • Outboard power supply: 20V/3.000mA DC, suitable for your country’s mains supply
  • Power consumption: 600mA DC, <1W in standby
  • Replacement battery remote control: 1 x CR2032 / 3V or 1 x CR2025 / 3V

*With Pro-Ject Pre Box RS Digital and DAC Box RS only.