AUDIO-GD R-27 DAC R2R FGPA USB AMANERO HDMI I2S 32 bit 384khz 2x Accusilicon 2x Crystek

All options / enhancements version of the R-27 with 2 Accusilicon clocks on DAC stage and 2 Crystek clocks on USB input. Amanero interface with isolator and separate PSU.  Included aluminum remote control.

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Reference : 13911
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2 149,00 €tax incl.

1 790,83 € tax excl.
Including 0,05 € for green tax

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Last items in stock !
Shipping date: 10-12-2024.

Orders placed before 12h (GMT+1) will generally be shipped the same day (working day).

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Facturation France
SAV France

2 Years warranty

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More info

Audio-GD R-27 - Full upgrade version

Discrete DAC / Preamp & headphone amp balanced class A - 384kHz, Native DSD64-512

GD R27 Audio DAC superior high fidelity top high end

This is the 2019 version equipped with the latest 318B clocks from Accusilicon. The latter offer improved performance over previous TCXO models and allow the DAC to operate with increased accuracy.
Crystek clocks are also used on the USB interface.


The R-27 Audio-GD combines in one unit a discrete balanced DAC, a class A headphone amplifier balanced, and a class A preamplifier helmet balanced. Each of these elements is naturally integrated with the greatest care to the circuit and enjoys a linear regulated power oversized.

Like all Audio-GD latest equipment, advanced camera settings are accessed via a menu & a screen on the front panel.

The device connects to a digital source (computer, network drive, TV ... etc) through a comprehensive input connectors (Coax, Optical, USB, IIS). There is also an balanced analog input (RCA) and balanced (ACCS) for driving directly the preamplifier / headphone amplifier. The R-27 will be able to to have all of its audio decoding capabilities Installation / preamplifier.

DAC Discreet DA7-V2

DAC audio-gd


The floor support of the analog / digital conversion is based on 4 DA-7 Core V2 shielded modules. These directly interpret each bit of the digital signal to reconstruct the analog signal.
Each module performs its task by operating a network consisting only of resistors having a given value (R) and its double (2R) without passing through an over-sampling phase. This particular construction makes it possible to decode the digital signals with a quasi-insensitivity to jitter while avoiding any possibility of recovering clock noise in the output signal.

Each channel is decoded separately by its own set of modules to achieve optimal crosstalk. To go even further, each channel of the stereo operates its own linear power supply to minimize as much as possible pests that may affect the soundstage and stereo.

modules sets are supported by an FPGA. This takes care of the synchronization of audio and release jitter. It allows in fact to provide a more accurate and transparent sound reproduction, while drastically reducing noise. 3 Accusilicon clocks are also included, even for once to reduce to a minimum the jitter through optimal signal synchronistation.

ACSS Connectivity


In addition to supporting the DSD / DXD and sample rates up to 32bit / 384kHz, the R-27 has ACSS connectivity.

It operates as a discrete preamp stage that completely dispenses with operational amplifiers. With this construction, the signal is processed with high purity without unnecessary coloring of the sound, making it an element of choice for High Fidelity use.

gd current audio signal
Headphone amplifier audio preamp gd

Headphone amplifier


The front of the unit provides two headphone outputs: unbalanced and balanced. The amplification stage operates in pure class A on each output with a large power reserve to driver very demanding helmets: the balanced output is able to develop 1250mW with 300 Ohms headphones (against 350mW for the unbalanced output) .

The headphone amplifier / preamplifier has two gain settings. The High mode corresponds to a gain of + 22dB while the Low Mode represents a gain of + 12dB. In addition to the front volume, this option allows you to find the best balance for extended listening comfort.

Specifications
TypeDAC R2R
Preamplifier balanced class A
balanced class headphone amplifier A
Sampling supportedUSB: 44.1kHz - 384kHz / 32Bit DSD64-512
IIS: 44.1kHz - 384kHz / 32Bit DSD64-512
Coax: 44.1kHz - 192kHz
Optics: 44.1 - 96kHz
Digital inputsUSB
I2S (HDMI port)
Coaxial (75Ω) 0.5Vp-p
Optical 19dBm
Analog inputsRCA (47KΩ)
XLR (94KΩ)
Output LevelVariable: 10Vrms
DAC (fixed): XLR 5V / 2.5V RCA
Power headphone output (balanced output)40Ω: 9000MW
100Ω: 3800MW
300Ω: 1250MW
Power headphone output (unbalanced output)40Ω: 2500mW
100Ω: 1050MW
300Ω: 350MW
clocksAccusilicon x2 (DAC)
Crystek (USB)
USB interfaceAmanero 384 combo
Power supply220-240V AC 50/60 Hz
Power consumption55W
DimensionsW430 x L430 x H85
HousingAluminum
Weightabout 15kg
Package Contents
Audio GD R-27x1
Power cablex1
USB cablex1
Metal remotex1
Pinout HDMI I2S (PS Audio)
Pin 1 SDATA -
Pin 2 GND
Pin 3 SDATA +
Pin 4 SCLK +
Pin 5 GND
Pin 6 SCLK -
Pin 7 LRCK -
Pin 8 GND
Pin 9 LRCK +
10 Pin NC (Syn release still need the MCLK + on this pin)
11 Pin GND
12 Pin NC (Syn release still need the Mclk- on this pin)
13 Pin NC
14 Pin NC
15 Pin NC
16 Pin NC
17 Pin GND
18 Pin NC
19 Pin NC
 
Data sheet
InputRCA
InputSPDIF
InputI2S via HDMI
InputXLR
InputOptical
OutputACSS
OutputXLR
OutputRCA
DAC / ADC ChipR2R LADDER DAC
Max sampling rate384kHz
ColorBlack
NetworkingNo
Remote ControlYes
 
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AUDIO-GD R-27 DAC R2R FGPA USB AMANERO HDMI I2S 32 bit 384khz 2x Accusilicon 2x Crystek
All options / enhancements version of the R-27 with 2 Accusilicon clocks on DAC stage and 2 Crystek clocks on USB input. Amanero interface with...

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