AUDIO-GD HE-9 MK3 Balanced Headphone Preamplifier / Amplifier ACSS RCA XLR Silver

Preamplifiers & Volume Controllers

Reference 20564

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Audio-GD once again presents the quintessence of audio technology with its HE series products (here the 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. Although Audio-GD had already been studying the products since 2006, the brand's top technicians are now offering them to us in their most accomplished form, with outstanding performance.
€2,790.00Tax incl.

Including €0.05 for ecotax


2 years warranty

Available on order

  • Paiement sécurisé
  • Expédié et facturé depuis la France
  • 14 jours pour changer d'avis

Ce qu'il fait

Audio-GD HE-9 MK3 Balanced Headphone Preamplifier / Amplifier ACSS RCA XLR Silver

Audio-GD HE-9 MK3 : Front view


Audio-GD
 once again presents the quintessence of audio technology with its HE series products, here the HE-9 preamplifier and headphone amplifier, an evolution of the MASTER series. They have benefited from the longest design and testing period in the history of the famous brand. Although Audio-GD had already been studying the products since 2006, the brand's top technicians are now offering them to us in their most accomplished form, with outstanding performance. The MK3 version incorporates output buffers to improve the sound quality of the preamp, dual volume control to match the different output levels of your sources perfectly, and paired modules for the left and right channels for perfect sound coherence.

Audio-GD HE-9 MK3: Exquisite interior and connectors

This HE-9 has no fewer than 5 analogue inputs to meet every need: 2x RCA, 2x XLR and 1x ACSS, alongside 3 analogue outputs: XLR, RCA and ACSS. Not forgetting, of course, the headphone outputs on the front panel: XLR 4-pin and Jack 6.35mm, all two stereo.

Each Audio-GD product is scrupulously tested from every angle using one of the most powerful systems in the world: the Audio Analyzers 2700 Series from Audio Precision.

Audio-GD HE-9 MK3 : Front view

Audio-GD HE-9 MK3: Class A / Balanced / ACSS / XLR / RCA

This HE-9 headphone preamplifier/amplifier is designed around a purely symmetrical Class A ACSS discrete circuit, with no OPA whatsoever and a separate power supply. This avoids any electromagnetic interference on the processed signals.

It has no fewer than 3 R-Core transformers for a total power of 260W and a power consumption of just 95W. It also has 100,000µF of very high-end Nover capacitors and 8 transistors of 150W each for the output stage.

Audio-GD HE-9 MK3 : Interior
Audio-GD ACSS

Audio-GD HE-9 MK3: ACSS

Audio-GD has its own signature technology called ACSS for Audio-GD Current System Signal. Thanks to the company's expertise and know-how, this technology offers a less coloured, more detailed sound with unrivalled neutrality. When the ACSS output is used, the XLR and RCA outputs switch to mute mode.

Audio-GD HE-9 MK3: Regenerative Power Supply

The HE series from Audio-GD features Regenerative Power Supply technology, which has undergone extensive testing and research to produce its current incredible performance. In particular, this technology uses a thick aluminium plate to separate the power supply circuits, a shield for 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 supply system can be felt right from the first listen, with more detailed reproduction, greater dynamics, deeper bass and a wider soundstage. Furthermore, this technology also offers a more ‘analogue’ sound reproduction.

Technical characteristics

Specifications
Product type Headphone amplifier / Preamplifier
Signal-to-noise ratio (SNR) > 130dB
Total harmonic distortion (THD) < 0.0025%
Total harmonic distortion more noise (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
1350 mW @ 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
Consumption 66W (Class A)
Weight 22kg
Housing material Aluminum
Color Silver
Dimensions 430 x 445 x 123mm
Package 1x Audio-GD HE-9 MK3
1x Remote control
1x Power cord

Data sheet

Condition New

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