Gustard X20U DAC Sabre 9018 DSD Expand

Gustard X20U DAC Sabre 9018 DSD


Gustard X20U is the digital / analog converter Hi-End dual chip Sabre Reference 9018, native support for DSD inputs coaxial, optical, AES/EBU XLR, I2S, HDMI, USB Audio Class 2.0. Analog outputs RCA and XLR. Remote control.

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Gustard DAC X20 Digital to Analog Converter

The DAC Gustard X20U XMOS Dual ESS 9018 SABRE is a digital to analog converter designed state of the art. This DAC 32bit/384kHz, has a USB input high-level class 2.0. Thanks to the precision of 0.1 ppm and to the power of the processor XMOS 500MIPS with CPLD Altera MAX II, the Gustard DAC X20U supports the liquid music in high resolution, has a low level of jitter and audio outputs completely symmetric, discrete pure Class A.

The high quality of its components such as the clock of the Sabre ESS ES9018 TCXO operating at 100MHZ, the presence of a processor in the CPLD Altera MAX THETHE with 8 MB of dedicated memory, make it a DAC that is ideal to be placed in a Hi-Fi system high. Of course, this DAC has inputs asynchronous USB with three clock separated for the correct decoding of audio streams to a DSD 64, DSD 128 to DSD 256, and flows of PCM, DXD up to 32bit 384kHz and is perfectly compatible with ASIO to a riprodizione bit-perfect on Windows systems (you must use the driver contained on the diskette included in the package).

Advanced management of the Clock double mode

The DAC Gustard X20 offers an input of the asynchronous digital technology, auto-adaptive and also a Master Clock which automatically obtains the clock frequency of TCXO (clock dedicated to multi-frequency).

Analog stage with Hi-End discrete components, the selection of the output gain

The analog output, made of discrete components, allows the selection of adjust to three separate levels of output signal level (0 dB, 6 dB and 12 dB) with an attenuation adjustable from 0 to -99dB. The double converter Sabre Reference ESS 9018, which is present in Gustard X20, operating with 64-Bit precision allows you to control volume with direct access to the internal path of the data of the DAC with a performance exactly comparable to those of a volume control (analog, up to the achievement of the background noise generated by the analog components.

In this way, the DAC Gustard X20U turns into a real preamp so that you can connect directly to a power amplifier of stereo, or two mono, both outputs unbalanced RCA or XLR balanced outputs.

Dual toroidal transformer

The Gustard DAC X20U has a power supply for an extremely well maintained and consists of two separate toroidal transformers, one dedicated to the management of the digital signal, and one dedicated to the management of the analog output signal. This device ensures very low levels of Jitter and electrical noise.

The control section of the power supply is based on the filter capacitors of the Rover and on a voltage regulator, LM2941, and is entirely made with discrete components.

The Audio input on the I2S HDMI

The HDMI input format I2S of the DAC Gustard XMOS X20 is compatible with the format AudioGD.

General characteristics

  1. Double converter the ESS Sabre Reference ES9018 32-Bit - One for the left channel, one for the right channel, each with 8 pipeline data.
  2. Technology the Master Clock in adaptive Technology and a Master Clock Asynchronous. Ability to select a dele two modes of clock have.
  3. The chip XMOS 32bit for the reception of the digital signal to USB, it offers the best possible performance for the asynchronous processing of the data.
  4. Device CPLD with programmable logic. Fine adjustment of the volume based on the ESS9018.
  5. The signal levels of the output volume can be set freely, with attenuation adjustable from 0 to -99DB.
  6. Filter DSD adjustable to 50, 60 or 70 kHz.
  7. Filter PCM-adjustable, Sharp, Slow Roll OFF.
  8. Phase reversal, adjustable to 0° or 180°.
  9. TFT LCD screen, with adjustable contrast.
  10. The power supply section based on two toroidal transformers, one for the digital section and one for the analog section, completely independent, with the section of the stabilisation and filtering of the input voltage is fully realized with discrete components.
  11. Analog output balanced and symmetrical, entirely made with discrete components. Simultaneous output of the signal on connection balanced XLR and unbalanced RCA.
  12. Digital inputs: 1 port AES/EBU XLR 110 Ohm, 1-port Coaxial RCA 75-Ohm, 1-port Optical Toslink, 1 Asynchronous USB Audio Class 2.0 1-port, I2S
  13. Power consumption: <50W
  14. Dimensions (excluding protrusions): 380mm x 65mm x 260mm (L x A x P)
  15. Weight: 6.3 Kg (including packaging)
  16. Remote control
  17. Compatible with operating systems Microsoft Windows XP / Windows Vista / Windows 7 / Windows 8 / Windows 10 (requires disk drivers supplied), Mac OS X 10.6.4 or higher (no drivers are required). Perfectly compatible with the systems CocktailAUDIO X12, CocktailAUDIO X30, CocktailAUDIO X40, CocktailAUDIO X50

Technical specifications of the DAC

  • ESS Technology ES9018 Sabre Reference 32-bit DAC
  • Configuration, with 8 mono channels are grouped into 2 stereo channels for a total of four D/A converters per channel
  • Frequency response: 20-20K Hz +/-0.15 dB

The characteristics of the Inputs Digital

Coaxial and BNC

  • PCM: 16-24bit /44.1 Khz, 48Khz, 88.2 Khz, 96Khz, 176.4 Khz, 192 Khz
  • DOP (DSD Over PCM): PDO 64

Optical Toslink

  • PCM: 16-24bit /44.1 Khz, 48Khz, 88.2 Khz, 96Khz, 176.4 Khz, 192 Khz
  • DOP (DSD Over PCM): PDO 64


  • PCM: 16-24bit /44.1 Khz, 48Khz, 88.2 Khz, 96Khz, 176.4 Khz, 192 Khz
  • DOP (DSD Over PCM): PDO 64


  • PCM: 16-32bit /44.1 Khz, 48Khz, 88.2 Khz, 96Khz, 176.4 Khz, 192 Khz, 352.8 Khz, 384Khz
  • DSD native: DSD 64, DSD 128 AND DSD 256, DSD 512
  • DOP (DSD Over PCM): PDO 64, DOP 128, DOP 256, PDO 512


  • PCM: 16-32bit / 44.1 Khz, 48Khz, 88.2 Khz, 96Khz, 176.4 Khz, 192Khz, 352.8 Khz, 384Khz
  • DSD native DSD 64, DSD 128 AND DSD 256, DSD 512

Characteristics of the analog outputs

  • RCA output: 2.3 Vrms @0dBFS
  • XLR output: 5.6 Vrms @0dBFS

Package contents

  • Digital to Analog converter DAC Gustard X20u
  • Manual
  • Power cable Shuko
  • Driver CD (for use with Microsoft Windows operating systems)
  • Remote control

Gustard DAC X20 Digital to Analog Converter: the construction

Rigorous Design, construction, and rational construction, clean with solid materials and carefully selected

Costruzione interna del convertitore dac Gustard X20

The analog section and the digital section is completely separate

Sezione analogica e digitale del dac Gustard X20

LPF and outputs the signal entirely made of discrete components

Sezione analogica a discreti

Double convertor Sabre Reference ESS9018 32-Bit

Unlike the old converters-DAC 24-bit, converter the ESS Sabre 9018 is used by the Gustard X20U processes the digital signal at a resolution of 32 bits, allowing to contain the levels of noise and distortion at values significantly lower than the previous generation converters with 24-bit Delta-Sigma.

Doppio Convertitore Sabre 9018 Reference

Adaptive technology of the Clock and the Asynchronous

Tecnologia Master Clock Adattativa e Asincrona

Tecnologia Master Clock Adattativa e Asincrona CPLD

Power-based double toroidal transformer

Two toroidal transformers independent, one for the analog section and one for the digital section, are supported by a generous circuit filtering of the voltage, also made with components to discrete

Alimentazione Gustard X20

Section of filtration multi-stage with voltage regulator

Filtraggio alimentazione Gustard X20

USB input

Based on the board dedicated XMOS U8 (model ultra-high performance with 8-core independent)

Xmos U8 Gustard

Package contents

Gustard X20 contenuto della confezione

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