AUDIO-GD R2R 7 Balanced DAC 8x FULL LADDER DAC FPGA I2S HDMI LVDS AMANERO

AUDIO-GD R2R 7 Balanced DAC 8x FULL LADDER DAC FPGA I2S AMANERO
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LADDER R2R technology represents the ultimate in digital audio conversion with a lowered jitter and a clock working under optimum conditions.

Average votes for this product
5.0 / 5


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Shipping date: 14-12-2018.

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Audio-GD R2R 7

DAC 24bits 384kHz I2S Technology R2R Ladder DAC

Audio GD R2R 7

LADDER R2R technology represents the ultimate in digital audio conversion with a lowered jitter and a clock working under optimum conditions.

However everything depends on the accuracy of the resistances under 24 bits ie 0.00001%, value almost impossible to have in terms of stability and over time.

Audio-GD R2R 7

Audio GD solves the problem with an ALTERA FPGA processor and a proprietary algorithm distributing the digital signal to parallel-mode resistors that increase decoding accuracy.

TODIO GD strikes hard and opens the doors of the conversion of High Definition R2R reserved yesterday to the reference marks High-End audiophile.

A separate stage power supply with discrete components

Audio-GD R2R 7

An R2R conversion with such high-precision resistors would be nothing without a power supply of the highest stability.

The DAC R2R 7has three sections of linear power supplies of 130W in total, separate for digital and analogue right and left side of the three input transformers separated into 21 groups of controls with 50000 μF of filtering only in discrete transistors polarized in pure class A with fast rise times.

Thethe result is at the height with a background noise of the lowest and distorted distortion translating an audio signal without digital caricature and without hearing fatigue.

Audio-GD R2R 7

An innovative input section SPDIF and HDMI LVDS

Unlike many manufacturers using the digital input chips WM8804 or DIR9001, AK411X, AUDIO GD has designed a proprietary Xilinx FIFO (first in first out) programmable chip input circuit for all digital inputs.

TheThe input signal is thus processed by two TCXO clocks in a loop allowing perfect synchronization of the data thanks to a high rejection of the jitter itself coming from external digital sources of poor quality.

This CInput Array is fully configurable for ovesampling X2 up to X8 and of course in NOS mode (Non Oversampling Sampling).

The user can thus choose his or her sound signature corresponding to his or her technological desires. The USB part is fully managed byAmanero, one of the best interfaces entirely redesigned by AUDIO GD.

Audio-GD R2R 7

An ACSS analog stereo section dedicated to enthusiasts

Audio-GD R2R 7

The last stage of the DAC R2R 7 is the heart of the know-how of AUDIO GD. With 15 years of expertise in analog processing, this DAC features the quintessence of the Qinghua designer (Mr AUDIO GD) with an exclusively FET single-ended class FET transistors with no negative feedback and very low output impedance.

These fully symmetrical stages are completely separated left and right, so the music is respected in its slightest inflections with a true osmosis between micro information, bandwidth neutrality and a sense of innate rhythm.

Bien heard this stage features ACSS Mini XLR analog outputs for even more detail and definition.

Audio-GD R2R 7

Specifications

Specifications
Signal / Noise Ratio- 120dB
Total harmonic distortion- 112dB over 2.5V
ClocksTriple TCXO high precision clock
Frequency response20Hz - 100kHz
Audio formats supported on RCA inputs, Toslink, BNC, AES / EBUFrom 16 to 24 bits 192kHz Max
Audio formats supported on I2S and USB inputsFrom 16 to 32 bits 384kHz Max
Digital inputs
HDMI LVDS i2S3.3V
RCA CoaxialPCM 0.5V point to point
BNC75Ω PCM 0.5V point to point
Optics Toslink19dBm
XLR AES / EBU110Ω
Analog outputs
XLRSymmetrical 4.5V 5Ω
RCAAsymmetrical 2.5V 5Ω
ACSS Mini XLR 3 points2.2mA
Miscellaneous
USB compatible iPhone / iPadYes - via Apple Camera Kit
Dimensions430 x 430 x 93mm
ColorBlack
Chassis materialAluminum
Weight15kg
Food220 / 230V 50 / 60Hz

Mapping I2S / LVDS
A synthesis of main IIS on LVDS pinouts mapping is available here.

Audio-GD R2R 7
 
Data sheet
InputXLR
InputOptical
InputBNC
InputUSB Amanero
InputSPDIF
InputI2S via HDMI
OutputRCA
OutputACSS
OutputXLR
DAC ChipR2R LADDER DAC
Max sampling rateDSD256
Max sampling rate384kHz
ColorBlack
Components / ChipR2R LADDER DAC
MaterialMetal
StructureAluminium
 
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Average votes
5.0 / 5
1 reviews
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 5/5
Date :
Vivant et tridimensionnel
Même signature sonore que le R2R-1, mais il va beaucoup plus loin.
Tout est encore plus réel et vivant.
Suivant l'enregistrement on a l'impression d'être devant ou bien avec les instrumentistes. chacun est à sa place et on a aucune difficulté à écouter tour à tour tel ou tel instrument. L'image sonore est tridimensionnelle, c'est une autre écoute qui est presque déroutante au début. Il ne faut pas hésiter à l'associer à un ensemble HiFi haut, voir très haut de gamme. De l'électro au trio de jazz en passant par du métal tout a du corps et de la consistance.
C'est le maillon de loin le moins cher de mon système, mais ce n'est sûrement pas lui que je changerais si je devais le faire évoluer.

Jm
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This review has been posted for AUDIO-GD R2R 7 Balanced DAC 8x FULL LADDER DAC FPGA I2S HDMI LVDS AMANERO
 
AUDIO-GD R2R 7 Balanced DAC 8x FULL LADDER DAC FPGA I2S HDMI LVDS AMANERO
LADDER R2R technology represents the ultimate in digital audio conversion with a lowered jitter and a clock working under optimum conditions.

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