Pro-Ject Pre Box RS2 Digital in Geneva | Digistore.ch
    Pro-Ject Pre Box RS2 Digital in Geneva | Digistore.ch

Pro-Ject Pre Box RS2 Digital | DAC preamp and headphone amp

64044
CHF2,399.00 Tax included
Supplier stock – typically 4 to 7 days
Pro-Ject Pre Box RS2 Digital, a high-end preamplifier, DAC and headphone amplifier with dual ESS9038Q2M DACs. Its output stage switches between tubes and solid state.
Color : Black
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Supplier delivery time usually 4 to 7 days

Silver RS2 series units stacked on a shelf

Dual ESS9038Q2M DACs

The Pre Box RS2 Digital is the bigger sibling of the Pre Box S2 Digital and keeps its two ESS9038Q2M converters in dual mono, with separate paths for each channel. Over USB it accepts PCM up to 32-bit/768 kHz and DSD up to DSD512. MQA is fully decoded in hardware.

Glowing tubes inside the case

Tube or solid-state output

The discrete, balanced output buffer switches between solid state and four 6922EH tubes. Eight digital filters, including the optimal transient filter designed with the creators of MQA, tailor the sound. A multi-core XMOS microcontroller and an Altera MAX II CPLD handle USB processing and re-clocking.

Inside view of the circuits under the cover

Nine digital inputs

Digital connections include USB, two optical, one coaxial, a balanced AES/EBU, Bluetooth 4.0 and an I2S link. The latter connects the CD Box RS2 T transport, to which the preamp supplies the 16.9344 MHz master clock. An XLR and RCA analogue input adds to the XLR and RCA pre-outs.

Silver rear panel with XLR, RCA and digital sockets

DC-coupled headphone amp

The headphone amplifier is DC-coupled, with no coupling capacitors, and a fast DC servo keeps DC voltage off the output. It delivers 245 mW into 32 ohms and 90 mW into 300 ohms. A large display, an aluminium remote and a black or silver case weighing 1.71 kg complete the package.

Black = Black; Silver = Silver
64044

Data sheet

Product Type
Preamplifier, DAC and headphone amplifier
Features
Input impedance: 15 kohms
Master clock output: 16.9344 MHz for CD Box RS2 T
Output buffer: discrete and balanced, tube and solid state
Output impedance: 180 ohms (solid state), 220 ohms (tube)
Power supply: 20 V / 3 A DC, 110 - 240 V, 50/60 Hz
Tubes: 4 x 6922EH
Bluetooth
Fully embedded Bluetooth v4.0, SBC, AAC, aptX
Brand
Pro-Ject
Integrated DAC
2 x ESS9038Q2M (dual mono, 32-bit/768 kHz/DSD512)
Headphone output
90 mW / 300 ohms, 245 mW / 32 ohms, 150 mW / 8 ohms
Audio outputs
Pre-out XLR and RCA, headphone (6.35 mm jack)
Digital inputs
1 x USB 2.0 Audio 32/768 + DoP and native DSD up to DSD512, 1 x I2S for CD Box RS2 T, 2 x S/PDIF optical 24/192, 1 x S/PDIF coaxial 24/192, 1 x AES/EBU balanced 24/192
Analog inputs
1 pair XLR, 1 pair RCA
Color
Black
Silver
Audio format
MQA: full hardware unfolding
Power consumption
1.2 A DC max., less than 0.5 W in standby
Distortion (THD)
THD+N (20 Hz - 20 kHz): less than 0.006% (solid state), 0.017% (tube) at 2 V RMS, 1 kHz
Width
20.6 cm
Depth
22.2 cm
Height
7.2 cm
Unit weight
1.71 kg

Specific References

EAN13
9120097821867
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