Gustard DAC DAC-A22 Symmetrical 2x AK4499 32Bit / 784kHz / DSD512 XMOS Bluetooth 5.0 Black

Gustard DAC DAC-A22 Symmetrical 2x AK4499 XMOS Black

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874,17 €tax excl.

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Shipping date: 22-10-2020.

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Gustard A22 DAC

DAC 2x AK4499EQ PCM784kHz, DSD512 - USB version / Bluetooth 5.0



Double DAC chip AK4499EQ


Gustard Audio DAC A22 makes use of two AL4499EQ DAC chip. This reference component is among today's best digital to analog conversion solution.

The audio stream is divided into two channels (right and left) which are both fed independantly to each DAC chip.

The device has its own discrete Intensity / Voltage converter. This converter has been specially developed for this specific application and comes with its own adder circuit. This ensures that the DAC chips are working under optimum operating condition for superior audio precision.

Built for excellence


Under its sleek CNC-machined aluminum housing, Gustard DAC A-22 makes uses of first class components with rigorous integration.

The digital circuit is controlled by CPLD (programmable logic chip). This type of electronic controller provides a very fine control of clock cycles, phase locked loop, demodulation of DOP (DSD over PCM) signals, digital switch suppression, and digital filters.

Even after the DAC stage, each channel from the stereo signal goes through its own dedicated circuit. Thus, L & R signals each have their own voltage stabilization and several filtering stages. This ensure a crystal-clear channels separation with no audible interference.

Double toroidal transformers


The DAC A22 embarks not less than two high stability toroidal transformers for its power supply. This configuration allows to power separately the digital and analog circuits, which significantly reduces unwanted noise in sensitive audio circuits.

In addition, each power supply units have been carefully divided and isolated from one another to avoid the spreading of I/V fluctuations while effectively preventing the captation of interferences.

XMOS USB XU208


USB connectivity works through a XMOS XU208 module, a reference particularly appreciated in the world of digital audio.

The latter supports PCM audio streams up to 768kHz and native DSD up to DSD512. This make the DAC-A22 a great choice for playing high-resolution files. In addition, this module supports as well I2S signals to take advantage of this excellent technology for digital audio stream.

This module incorporates two clocks Accusilicon AS318-B, a crystal oscillator model extremely low phase noise (- than 90dBc has 10Hz) typically found in professional recording equipment as well as electronic circuits very advanced audiophiles .

Clean analog circuit


The analog circuit in Gustard A22 is mainly composed of independent sub-circuit made of discrete components. for example it has a fully discrete analog low pass filter working in Class A. This type of construction is particularly interesting in the for a CPLD-driven high quality DAC in that it allows to operate optimally (and without compromise regaring performance) several circuits that do not share the same specifications.

Balanced & Unbalanced connectivity


DAC A-22 has a USB & HDMI-IIS digital input (PCM768K DSD512 driven XMOS U208 module), a SPDIF Coaxial input (PCM384K / DOP128), a SPDIF Optical input (PCM192K / DOP64) and an AES / EBU input (PCM192K / DOP64).

For it analog output, the DAC offers a balanced (XLR) and unbalanced (RCA) stereo connectors.

pinout I2S


The I2S configuration LVDS via HDMI is not natively compatible with PS_AUDIO standards (Audio-GD ... )

Technical characteristics

Specifications
Product typeDAC
Digital inputsI2S (HDMI)
USB
Coaxial S/PDIF
Optical S/PDIF
AES/EBU
Bluetooth 5.0
Analog outputsStereo XLR (balanced)
Stereo RCA (single-ended)
DAC Chip2x AK4499EQ
Sampling rateI2S, USB : PCM 44.1 - 768kHz 16-32bit /DSD64-512
Coaxial : PCM 44.1 - 384kHz 16-24bit /DoP64-512
Optical, AES/EBU : PCM 44.1 - 192kHz 16-24bit / DoP64
ClocksAS318-B (Accusilicon)
USB InterfaceXMOS XU208
Frequency response20Hz - 20kHz ±0.08dB
Line outputRCA : 3Vrms @ 0dBFS
XLR : 6Vrms @ 0dBFS
XLR Pinout1 : GND
2 : +
3 : -
Volume control
General
Dimensions328 x 260 x 76mm
Weight5380g
ColorBlack
Package1x Gustard DAC-A22
1x Power cable
1x USB-A to USB-B cable 1.8m
1x Remote control (requires 2 x AAA 1.5V batteries sold separately for operation)
1x Antenna
 
Data sheet
InputI2S via HDMI
InputUSB 2.0
InputUSB
InputOptical
InputUSB-B
InputAES/EBU
InputSPDIF
OutputRCA
OutputXLR
DAC ChipAK4499
Max sampling rateDSD512
Max sampling rate768kHz
ColorBlack
Channel2 channels (Stereo)
 
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