Pro-Ject Pre Box RS Digital

Brand: Pro-Ject

The Pre Box RS Digital combines all the features of the DAC Box RS with selectable solid-state or tube output stages.

As in all of Pro-Ject’s top-class digital products, they use PCM1792 DAC chips from Texas Instruments, but a new feature in the Pre Box RS Digital is its dual chip mode to achieve ultimate fidelity. As a selectable feature a second DAC chip from Texas Instruments is on board, that can handle up to 32bit/384kHz.

Included on the Pre Box Digital RS is a headphone output with selectable impedances for perfect matching with your headphones. 

The Pre Box Digital RS offers 3-dimensional sound-staging, perfect micro dynamics and ultimate resolution combined with flexibility to use a wide range of digital and 1 analogue sound sources. 

Combined with the Pro-Ject CD Box RS the Pre Box RS Digital will give outstanding sound experience, because of a I²S connection provided via RJ45 that offers jitter-free disc playback.


•  Switchable DAC chips: 2x PCM1792 or PCM5102


•  9 digital inputs: i²S, AES/EBU, Toslink, S/PDIF coax


•  Analogue: Pre-out XLR/RCA/headphone, RCA input


•  Headphone amp with adaptable output impedance


•  Fully balanced double mono design


•  Output stage switchable between 6922 tube & solid state


•  Ultra-linear and ultra low noise


•  Pure Class A circuitry


•  Blue Alps volume control


•  Standby-power consumption


•  IR remote control included 

Analogue Inputs: 

               1 x RCA (Pair)

Digital Inputs: 

               1 x AES, 2 x Coax, 4 x Optical, 1 x Sonic

Analogue Outputs:

               1 x RCA (Pair)

Digital Outputs:

               1 x XLR (Pair), 1 x Clock

Frequency Response:

               20Hz - 50kHz (0dB / 0.1dB)


               2 x PCM 1792 24-bit / 192kHz (DAC 1)

               PCM 5102 32-bit / 384 kHz (DAC 2)

Power Consumption:

               300mA (Solid)

               850mA (Tube)

               90mA (Standby)



Dimensions (W x H x D):

               206 x 72 x 230m (With Sockets)



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