Violectric V850 Digital Analog Converter

Violectric

The successor of famous DAC V800 offers best sound, unsurpassed technology, countless features.

  • The digital signal is first routed to re-sampling circuitry where virtually all incoming jitter is eliminated.

    Then up to 4 times up-sampling can be selected from the front panel.

    This process can be completely disabled or set to “best” operation which means that all incoming digital signals will be normalized to 96 kHz.

    We have found this to be the optimal frequency to achieve the best audio quality when re-sampling lower bit rate data.

    A digital output is also provided which mirrors either the active input signal or the digital signal that has been processed by the re-sampler.

    Our design features a 32 bit double mono converter architecture which consists of two 32 bit (PCM1795) converters for each channel.

    This serves to enhance the dynamic range and minimize distortion.

    The analog output circuitry is fully balanced from the D/A converters to the analog outputs.

    This is very similar to the circuitry design we used in the DAC V800 but, with further refinement in the output stage.

    The maximum balanced analog output level may be set internally to +24 / +18 / +15 / +12 / or +6 dBu to ensure a perfect match with your other equipment.

    The unbalanced analog outputs will always be 9 dB lower compared to the balanced output setting.

    The volume control is again all digital just like we used in the DAC V800.

    There is no scratching, no channel imbalance, and no reduced crosstalk which can be the case with an analog volume implementation.

    This is why we prefer digital all the way through our design. Yes, there is some reduced resolution when lowering the volume.

    However since we first up-sample the input to 32 bits we have at least 8 bits with no definitive content.

    This gives us 8 x 6 = 48 dB of gain reduction available to lower the output volume and prevents any degradation of the original digital signal.

  • 4 digital inputs switchable: 

    • transformer balanced via XLR (AES 3/11), 24/192
    • coaxial via Cinch (S/P-DIF, AES-3id), 24/192
    • optical via TOS Link, 24/192
    • USB input, X-mos based, 24/192
    • coaxial digital output including digital volume control
    • resampling/upsampling with selectable modes: x1, x2, x4 and "BEST"
    • Low jitter clock (< 1pS) with low noise supply
    • LED displays for active input, Lock, Mute/Error, resampling status
    • Double-mono architecture with 2 D/A converters per channel 
    • 32 Bit delta-sigma DACs with outstanding 120 dB dynamic range and -112 dB THD
    • perfect analog output stages to not affect the maximum dynamic and minimum THD-N
    • Analog output level adjustable in the digital domain with 32 bit accuracy
    • Optional remot control for motorized volume control, input selection, resampling action
    • Additionally the max. analog level is internally adjustable in 5 steps
    • Analog signal treating including phase-reverse and sharp/soft filter roll-off
    • Analog outputs electronically balanced via XLR and unbalanced via Cinch
    • oversized toroidal transformer
    • extensive internal power conditioning with low-ESR capacitors
    • Case and back panel are made of strong aluminium and are Nextel coated. 
    • The 8 mm frontpanel is milled, sand-blasted and anodised. 
    • The labeling is laser engraved.
  • Technical Data DAC V850


    4 digital inputs:

    • AES/EBU, XLR, transformer balanced
      according to AES-3, impedance 110 ohms
    • S/P-DIF, Cinch, unbalanced, according to
      IEC 958 / AES-3-id, impedance 75 ohms
    • TOS-Link according to EIAJ RC-5720 
      USB 24 bit, up to 192 kHZ

    Input sensitivity: < 200 mV

    Input data format: AES, S/P-DIF, 24 bit / 192 kHz

    Digital output: S/P-DIF, Cinch, unbalanced, according to IEC 958 / AES-3-id, impedance 75 ohms

    Sample rate: 28 ... 210 kHz (USB 44.1, 48, 96 kHz)

    Stopband rejection: > 100 dB

    Dynamic range: > 120 dB

    Freq. Range: 
    10 Hz ... 20 kHz (- 0,05 dB)
    10 Hz ... 40 kHz (- 0,20 dB)

    THD:< -112 dB (@ -1 dBFs)

    max. Output level: (5 steps selectable)

    Balanced: +24 / +18 / +15 / +12 / +6 dB
    Unbalanced: +15 / +9 / +6 / +3 / -3 dB

    Variable Output: adjustable in the digital domain

    Analog outputs: 

    2 x XLR, electronically balanced
    2 x Cinch, unbalanced

    Power supply: 230 / 115 V AC, 15 VA

    Dimensions: 170 x 49 x 225 mm (W x H x D)

    Case and Back: Nextel coated aluminium