Audio-GD HE-9 MK3
Audio-GD presents the extreme of audio technology with the HE9 MK3. A discrete, balanced pre- and headphone amplifier with regenerative power supply. HE-9 applies ultra-low distortion single stage ACSS amplifier and soldered directly on the motherboard. A fully class A, discrete, balanced preamp / headphone amp with regenerative power supply.
HE 9 MK3 EDITION
This MK3 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:- Difference between HE-9 MK2 and HE-9 MK3 is the chassis and display changes. No sound quality improvements.
- The output of the pre-amplifier now incorporates output buffers to improve the sound quality of the preamp output.
- Dual volume control to perfectly match the different output levels of your sources.
- The two modules for the left and right channels are now completely identical and are factory matched for perfect sound consistency.
SUMMARY
- Built in top class regenerative discrete power supply
- Fully balanced pure class A design built by discrete analog stages without any OPA or coupling caps in the signal channels.
- Non- feedback ACSS analog output stage.
- Uses three R-core transformers (In total “260W” ) and more than “100,000uf” audio grade NOVER capacitors.
- Total applied 8 pcs exact matching 150W transistors ( In total 1200W ) .
- A total of 9 groups of PSU’s for dedicated DC supply.
- Uses most Hi-end grade parts and exactly matched transistors, OCC wires.
- Four-channel 100 steps digitally controlled relay-based volume control avoids channel imbalance and improves sound quality .
- Supper Exponential Volume Characteristic, easy match the volume with very high headphone / speaker without change the gain mode.
- 20dB gain can drive the low sensitivity headphone very well.
- Static storage mode control software for avoid disturb sound quality , the MCU output once control data and save in the perform parts ,then stop output data until users next operation.
SPECIFICATIONS | |
|---|---|
| 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 |
| Consumption | 66W (Class A) |
| Weight | 20kg |
| Housing material | Aluminum |
| Dimensions | 430 x 485 x 123mm |
| Display | Multilevel LED |
| Package | 1x Audio-GD HE-9 MK3 1x Power cable 1x Metal Remote |