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DAC Symmetrical ACSS / 8x PCM1704UK / Amanero Audio-GD HE-7 Singularity

Among the best DACs in the world

Audio-GD is evolving its range HE, composed of its most high-end products. They have the longest design and testing time since the brand's inception.

Flawless components and connectivity

Like its predecessors, the Audio-GD HE-7 Singularity uses the brand's USB Amanero technology supporting resolutionsons up to 32bit / 384kHz.

The HE-7 Singularity takes advantage of 6 inputs: BNC / AES / RCA Coaxial / Optical / HDMI-I2S / USB. Each is equipped with the right interfaces to offer the highest sound quality. On the output side, the HE-7 offers XLR, RCA and ACSS.

Each product is tested with professional equipment, the SYS-2722 AP, to ensure maximum quality and reliability.

A largely improved DSP

The great novelty of this HE-7 Singularity is probably its brand new DSP and its special design. It is a two-channel digital interpolation filter and a data processor for digital audio. This DSP offers advanced features for high performance applications up to 450MHz. The DATA and Master-Clock processing is done without jitter. Thus, the HE-7 covers a wider sound stage and allows you to enjoy precise and neutral sound reproduction of your files. The DSP also avoids digital noise.

32MB / 384kHz / 8x PCM1704UK / USB Amanero / ACSS / HDMI I2S

The HE-7 Singularity is designed around 8 PCM1704UK converters working in parallel with a purely symmetrical class-A ACSS discrete circuit, with no PDO, with separate power supply.

In addition, with its excellent USB Amanero and HDMI I2S management, the DAC supports resolutions up to 32 bit / 384kHz. So you can enjoy your high-resolution files without any worries.

Audio-GD Haute fidélité


Audio-GD poshas its own technological signature called ACSS for "Audio-GD Current System Signal". Thanks to the expertise and know-how of the firm, this technology offers a less colored, more detailed sound, and an unparalleled neutrality. Every professional engineer of the brand is, in addition to being experienced, a passionate of HiFi and Audio like you and us.

8x PCM1704UK

These 8 digital analog converters make use of the recognized and confirmed "R2R conversion". The latter consists in using directly the bits of the digital signals to reconstruct the analog signals, all this by acting on a network constituted solely of resistors having a given value (R) and its double (2R), without going through an over sampling phase .


A food of size

If the 8 PCM1704UK and theexcellent analog output stage impress on this HE-7 Singularity, it is not left behind power supply, far from it. Indeed, to ensure optimal operation of the DAC and to promote sound reproduction, there are no less than 21 power units that feed the device. 19 high-quality Parallel Class A PSUs and a dedicated dual-stage DC block provide the HE-7 Singularity with its own power supply for deep, neutral playback. The dual stage PSU is particularly important for digital components, to keep the jitter low and not degrade your music.

In addition, Audio-GD incorporates the "Power Regenerative" technology in its DAC HE-7 Singularity to block power line interference. In this system, the AC signal is first converted to DC and then regenerated to produce a perfect sine wave.

Power Regenerative Audio-GD Design


Connections: Inputs
1x BNC 24bits 192kHz
1x AES24-bit 192kHz
1x RCA Coaxial24kits 96kHz
1x Optical24kits 96kHz
1x HDMI I2S32bits 384kHz
1x USB32bits 384kHz
Connectors: Outputs
1x XLR-
1x RCA-
1x ACSS-
Signal Ratio> 120dB
Output Impedance10Ω
Output Level2.5V (RCA) / 5V (XLR) / 2 + 2MA (ACSS)
frequency response
SPDIF up to 192kHz / Optical up to 96kHz / I2S - USB up to 384kHz295W (4 units) </ Td>
iPhone / iPad via Apple Camera Kit
220-240V AC 50 / 60Hz
≅ 19kg460 x 450 x 125mmAluminumBlackPower cable </ Td>
Data sheet
InputUSB Amanero
InputI2S via HDMI
DAC ChipPCM1794
Max sampling rate192kHz
Components / ChipPCM1704UK
ClassClass A / AB
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