Project DAC Box RS Reference-class D/A converter

Pristine condition with remote, accs, and box. European reference standard, pinpoint accuracy with a touch of warmth with tube output stages are switchable: 6922 tube and solid state (switchable). No disappointments. 
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Descriptions:

The advanced DAC Box RS is a reference-class D/A converter
for all kinds of digital stereo sound sources. It superbly acts as a
superior USB audio interface for demanding computer audio, also features
AES/EBU input and I²S interface for use with CD Box RS. For the engaged
audiophile we provide full DSD capability (up to DSD128) over PCM. All
inputs fully support 24/192kHz HD music data (optical inputs 96/24) in
fully asynchronous mode. Additionally DAC Box RS incorporates a pair of
the best audio grade DAC chips, PCM 1792, which only can be found in
expensive high-end designs. 2 different digital filter settings are
selectable to meet your favourite sound preferences. Additionally we
realized that its also depending on customers taste and type of
music/recording, what technology for the outputstage is preferable. More
warm and relaxed sounding with Tubes or Solid State Class A with
limitless details and dynamics. The DAC Box RS has both options to
select! The whole audio circuitry design is ultra low noise and ultra
linear with very low output impedance to avoid any negative interference
with cables or pre-amps.

• Double top grade PCM-1792 D/A chip from Texas Instruments
• 9 Inputs: USB, AES-EBU, optical (Toslink), coax (S/PDIF)
• 24bit/192kHz asynchronous USB (XMOS technology)
• DSD (up to DSD128) capability (DSD over PCM)
• I²S interface for CD Box RS (sonic2data transfer technology) with additional clock synchronisation port (BNC)
• 2 selectable digital filter settings
• Fully balanced analogue audio circuitry
• Tube output stage & solid-state output stage (switchable)
• Ultra linear & ultra low noise circuitry
• IR remote control included
• XLR & RCA line level output sockets
• DC power supply (< 1 watt standby power)
• Full metal casing in silver

TECHNICAL SPECIFICATIONS

D/A-converter: Double Texas Instruments PCM-17928 x Oversampling design
Sampling rates: 32/44,1/48/88,2/96/176,2/192 kHz,(optical up to 96kHz)
Selectable filter settings: "Steep“ & "optimum phase“
Frequency response 20Hz - 50kHz (+0/-1dB)
Output stages: 6922 tube and solid state (switchable)
Analogue out RCA/Cinch & XLR
Output voltage max 4/2 V (XLR/RCA)
THD 0.005% solid state out 0.25% tube out
Signal to noise ratio 100dB
Power consumption<1 watt standby, 800/300mA max (tube/solid)
Outboard Power supply 20V/3A DC (included)
Dimensions W x H x D 8.11 x 2.84 x 7.88 in (8.66 in with sockets)
Weight 2.23 lb without power supply