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Find here a selection of useful and/or essential accessories for this product. These are specially selected by the Audiophonics team according to the characteristics of the product.
Preamplifier / Headphone Amplifier / Balanced
Audio-GD once again presents the quintessence of audio technology with the products of the HE series (here HE-9), an evolution of the MASTER series. They have benefited from the longest design and testing period in the history of the famous brand. Even if Audio-GD had already studied the products since 2006, the brand's best technicians offer them here in the most advanced form with outstanding performance.
This MK2 version of the HE-9 adds some new features to improve the sound performance with a more detailed and dynamic sound, but also new features:
This HE-9 has no less than 5 analog inputs to meet all needs: 2x RCA, 2x XLR and 1x ACSS, along with 3 analog outputs: XLR, RCA and ACSS. Not to mention the headphone outputs on the front panel: XLR 3 pins, XLR 4 pins and 6.35mm jack, all three stereo.
Every Audio-GD product is thoroughly tested from every angle with one of the most powerful systems in the world: the Audio Analyzers 2700 Series from Audio Precision.
This HE-9 headphone preamplifier/amplifier is designed around a purely symmetrical Class A ACSS discrete circuit, without any AOP and with separate power supply. This prevents electromagnetic interference on the processed signals.
It is equipped with no less than 3 R-Core transformers for a total power of 260W and a consumption of only 95W. It also has 100,000µF of very high-end Nover capacitors and 8 transistors of 150W each for the output stage.
Audio-GD has its own technological signature called ACSS for Audio-GD Current System Signal. Thanks to the firm's expertise and know-how, this technology offers a less colourful, more detailed and neutral sound. When the ACSS output is used, the XLR and RCA outputs are muted.
Audio-GD's HE series incorporates Regenerative Power Supply technology, which has been extensively tested and researched before reaching the current result, offering incredible performance. This technology uses, among other things, a separation of the power supply circuits by means of a thick aluminium plate, shielding of the main power supply circuit and a design that limits the transmission of interference between the power supply and the audio circuits. The quality of this power system is felt from the first listening with more detailed reproduction, greater dynamics, deeper bass and a wider sound stage. In addition, this technology also offers a more "analog" sound reproduction.
Specifications | |
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Product type | Headphone amplifier / Preamplifier |
SNR | > 130dB |
THD | < 0.0025% |
THD+N | < 0.0025% |
Frequency response (XLR) | 20Hz - 100kHz (< 4dB) |
Max output level | XLR : 19V RCA : 9.5V ACSS : 6MA |
Input impedance | XLR : 94KΩ ACSS : < 5Ω |
Output impedance | Preamp XLR : 10Ω Balanced headphone output : 2Ω |
Balanced headphone output power | 15W @ 25Ω 10W @ 40Ω 4W @ 100Ω 1350mW @ 300Ω |
Single-ended headphone output power | 4W @ 25Ω 2500mW @ 40Ω 1000mW @ 100Ω 350mW @ 300Ω |
Crosstalk | < -130dB |
Transformer power | 260W (3 transformers) |
Gain | High gain : +20dB Low gain : +10dB |
Volume control | 100 steps Exponential curve |
General | |
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Consumption | 66W (Class A) |
Weight | 20kg |
Housing material | Aluminum |
Color | Black |
Dimensions | 430 x 485 x 123mm |
Display | |
Package | 1x Audio-GD HE-9 MK2 1x Power cable |
Input | XLR |
Input | RCA |
Input | ACSS |
Output | RCA |
Output | Jack 6.35mm |
Output | XLR |
Output | ACSS |
Color | Black |
Class | Class A / AB |
Remote Control | Yes |