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Audio-GD - HE-2 MK3 Regenerative PSU Mono Power Amplifiers
The HE-2 MK3 by Audio-GD presents a set of substantial mono power amplifiers designed for a high-end dual mono HiFi amplification system. These amplifiers deliver 500W per channel at 4Ω, including 30W in pure Class A. They incorporate a regenerative power supply alongside ACSS, Linear Fidelity, and Non Negative Feedback technologies, ensuring exceptionally transparent sound reproduction with minimal distortion
| Brand: Audio-GD |
| Product Type: Power Amplifiers |
HE-2 MK3 MONO POWER AMPS
- Powerful mono power amplifiers, integrated regenerate power supples.
- 30W pure class A , 250W class A at 8 ohm each channel
- Supports XLR and ACSS inputs
- 20 and 26dB two gain modes
- Apply Real balanced ACSS non negative feedback power amp
- Apply “Linear Fidelity” technology non negative feedback output stages
- Soft start power design
- 80 pcs ONsemi (Motorola) output transistors
SPECIFICATIONS | |
|---|---|
| Product type | Power amplifier |
| Inputs | XLR ACSS |
| Output | Speaker terminals |
| Amplification class | Class A |
| Output power | > 250W @ 8ohm > 500W @ 4ohm > 1000W @ 2ohm |
| Gain | 20dB 26dB |
| Frequency response | 20Hz – 100KHz (-3dB) |
| Input sensitivity | XLR: 2.2V RMS ACSS: 2mA RMS |
| Input impedance | XLR: 94KΩ ACSS: <10Ω |
| Total harmonic distortion more noise (THD) | 0.03% @ 10W 8Ω 0.04% @ 50W 8Ω 0.05% @ 100W 8Ω |
| Signal-to-noise ratio (SNR) | > 120DB |
| Channel imbalance | < 0.01DB |
| GENERAL | |
|---|---|
| Weight | 85kg |
| Color | Black or Silver |
| Package | 2x Audio-GD HE-2 MK3 mono power amplifier 2x Power cables |
Regenerative power supply
The power supply for Audio-GD’s HE-2 MK3 is based on a set of 4 transformers per unit, 3 of which are regenerative, making a total of 8 transformers for a total of 2,000W and an electrical capacity of 260,000uF. The main advantage of the regenerative transformers is their ability to “self-power”. In fact, this type of power supply has the ability to act as both a source and a load of current. In this way, these transformers can use excess energy not used by the system to feed it back into the system, thereby limiting the device’s actual power consumption. Furthermore, the power supply stage of the HE-2 MK3 has a very high input impedance to avoid mains disturbance, and a fast, low impedance, high linearity output, making it a high quality power supply.
Endless power
The amplification stage of Audio-GD’s HE-2 MK3 uses 40 ON Semiconductor transistors per unit for an output power per channel of 30 W in pure class A and 500 W at 4 Ω. Furthermore, signal gain is managed in current rather than voltage, resulting in unrivalled precision and ultra-low distortion. It’s also worth noting that you can choose between +20dB and +26dB of gain to best adapt the signal to your speakers.
ACSS interconnect
Audio-GD has its own signature technology, called ACSS for “Audio-GD Current System Signal”. Thanks to the firm’s expertise and know-how, this technology offers a sound that is less coloured, more detailed and of unrivalled neutrality. Each of the firm’s technical engineers is not only highly experienced, but is also a HiFi and audio enthusiast like you and us.
Linear & Non Feedback
HE-2 MK3 dual mono amplifier incorporates Linear Fidelity technology in the output circuits and Non Negative Feedback in the amplifier as a whole. This special design produces a linear response curve and a very low level of distortion, for extremely transparent sound reproduction, whatever the output level and frequency reproduced.