AUDIO-GD R2R 1 DAC DSP FPGA USB Amanero Isolated LVDS HDMI I2S INPUT 24bit 384Khz TCXOX2

AUDIO-GD R2R 2 DAC DSP FPGA USB AMANERO LVDS HDMI I2S INPUT 24bit 384KhzTCXO
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The DAC AUDIO GD R2R1 24bit 384khz succeeds the "tour de force" between respect for music and digital definition. Thanks to its class A power supplies, its analog circuits without feedback, its full HD R2R conversion composing by discrete controlled DSP FPGA avoiding errors of the DAC, the R2R1 Discrete OS / NOS is already a number one on the market.

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Shipping date: 25-09-2018.

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AUDIO GD R2R 1 FPGA LADDER DAC

AUDIO GD pushes the limits of a DAC 24BIT 384khz based on R2R technology corrected by DSP FPGA. the DAC R2R 1 offers a formidable ratio pricing pleasure always allied with the technical choices that make AUDIO GD today a major player of the High Definition converters.

The advantage of discrete R2R DACs

A discrete R2R DAC is known to be superior to an integrated R2R chip setup like PCM1704K or AD5791 offering a more natural listening acumen. The technical advantages are: The R2R DACs filter the noise of clocks that are not found on the analog signal. The R2R DACs are less sensitive to jitter on the 16bit definitions. The analog signal is theoretically more accurate than a DAC based on Delta Sigma technology.

A DSP FPGA processor

The DSP FPGA installed in the DAC AUDIO GD R2R 2 allows to overcome the inaccuracy of the resistances beyond 16/21 bit. We thus benefit from anot high precision even in High Definition 24 bit 384khz. These technical qualities are also: better processing from the SPDIF (coaxial, optical) inputs than the usual integrated interfaces (WM8505, DIR9001) thanks to faster computing power and FIFO buffer stages reducing the jitter drastically

.

Analogue stages in pure class A H2

Based on an expertise of over 20 years, kingwa designer AUDIO GD excels in creating analog stages without counter-reaction. The output circuit of the DAC R2R 2 benefits from this long research work incressant with stages entirely discrete transistors sorted and paired. There are no surface components and minimal components on the signal path. The last buffer stages are single-ended FET-type transistors with two-stage parallel bandwidth guaranteeing a low output impedance. this latter part has no capacitors in the signal path. Well-on this converter has high-speed outputs with high-current ACSS stage. There is no relay on the analogue circuit in the pure spirit "less is better".

Amanero Isolated

As usual, Audio-GD integrates an excellent Amanero Combo 384 asynchronous USB chip into its DAC, supporting sampling rates up to 32bit 384kHz. In addition, Audio-GD upgrades its Amanero module by adding an isolator, making it possible to obtain a more transparent and accurate reproduction.

amanero isolated

Specifications

Specifications Th>
DAC24bits 384kHz R2R scale
Digital Input Sensitivity0.5V pp (75Ω Coaxial), 19dB on Toslink optics Td>
Distortion rate per harmonic0.003% over 20 to 20kHz unweighted
Bandwidth20 to 20kHz Td>
Output Voltage Level2.5V (RCA), 2MA (ACSS)
Signal Ratio108dB
Output impedance Td>10Ω (RCA) Td>
Adjustment oversampling by jumperX2, X4, X8
Non Over Sampling Mode (NOS)By jumper
Sampling rate per digital inputs
USB and HDMI LVDS I2SPCM 44.1kHz - 384kHz to 16-32bits Td>
USB and HDMI DSDDSD64 to DSD256 Td>
Input SPDIF Coaxial Td>24bits max 44.1kHz-192kHz
Input SPDIF Optical Td>24bits max 44.1kHz - 96kHz
USB CompatibleWindows 7, 8, 8.1, 10 (requires a driver), MAC OS 10 and Linux Td>
Internal clock
ClocksDouble TCXO high precision clocks Td>
Miscellaneous
Power supplyLinear power supply with 3 secondaries with 5 groups, low noise regulation in pure class A
Dimensions240 x 320 x 80mm
Weigth5kg
Accessories1x USB Cable, 1x IEC Cable

Mapping I2S / LVDS
A synthesis of main IIS on LVDS pinouts mapping is available here.
 
Data sheet
ColorNoir
ComponentR2R LADDER DAC
StructureAluminium
Channel2 channels (Stéréo)
 
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Average votes
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1 reviews
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impressionnant
Tout ce que j'ai pu lire sur Audio-GD sur le net s'est révélé exacte.

Branché sur un Aries-mini de chez Auralic + alimentation Audiophonics,, dont le DAC m'avait déjà fortement impressionné pour le prix, tout est beaucoup mieux, mais pas que, les instruments se matérialisent sous nos oreilles.
- Scène sonore élargie
- Profondeur accrue
- Largeur de la bande passante étendue
- Donne de la matière et du poids aux notes
- Son analogique et très musicale

Bref pour comprendre il faut pouvoir l'écouter.

Du coup je deviens très désireux d'écouter son grand frère, le R2R 7He, car j'ai du mal à appréhender ce qu'il peut faire de mieux mais j'aimerais bien m'en rendre compte.

Je redécouvre ma musique et quelle plaisir.

Jm
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This review has been posted for AUDIO-GD R2R 1 DAC DSP FPGA USB Amanero Isolated LVDS HDMI I2S INPUT 24bit 384Khz TCXOX2
 
AUDIO-GD R2R 1 DAC DSP FPGA USB Amanero Isolated LVDS HDMI I2S INPUT 24bit 384Khz TCXOX2
The DAC AUDIO GD R2R1 24bit 384khz succeeds the "tour de force" between respect for music and digital definition. Thanks to its class A...

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