Audio GD HE 2 MK2

Audio-GD HE-2 MK2 - Balanced ACSS non negative feedback Power Amp with Regenerative Power Supply

Regenerate power supply with separate 4 blocks
30W pure class A , 250W class A at 8 ohm each channel
Supports XLR and ACSS inputs
Apply Real balanced ACSS non negative feedback power amp
Apply "Linear Fidelity" technology non negative feedback output stages
Soft start power design
80 pcs ON semiconductor (Motorola) output transistors　

Compare to Master 2H:
We tried two pair Master 2Hs working in Bi-Amps mode, compare to one pair HE-2MK2 working in the normal mode, in our opinion that the HE-2MK2 still better sound quality overall than the two Master 2Hs.

SUMMARY
Separate blocks regenerate power supply (The regenerate power supply for the gain boards )
Fully balanced design, the gain stages and pre-driver stages work in pure class A, built with discrete analog stages without any OPA or coupling caps in the signal channels.
The output transistor stages have supper excellent linear, it sound like the pure class A design but without the high heat of the pure class A design .
2 analog inputs: XLR / ACSS
Applies 80 pieces of ON Semiconductor transistors. Each channel supports 30W pure class A and 250W class A (8 Ohms) output.
The capacitance of the whole machine reaches as high as 260,000 uF, with 6 unit transformers (Over 2000W) and separate power supplies for the right channel and left channels.
A total of 8 groups of high-quality class A parallel connection PSU's supply
Applies all audiophile grade components, including DALE resistors, WIMA caps, custom order NOVER (UK brand) caps, all audiophile grade input & output sockets and gold IEC socket.

SPECIFICATIONS
S/N Ratio: >120DB
THD+Noise:
XLR input, THD+N at 8 ohm 10W: approximately 0.03%
XLR input, THD+N at 8 ohm 50W: approximately 0.04%
XLR input, THD+N at 8 ohm 100W:: approximately 0.05%
Gain: +26 DB
Output: >250W @ 8ohm, >500W @ 4ohm, >1000W @ 2ohm
Input sensitivity: 2.2V RMS @ XLR, 2mA RMS @ ACSS
Input impedance: 94K ohm @ XLR, <10 ohm @ ACSS
Frequency Breadth: XLR input, 8 ohm 1W output : 20-100KHz (-3DB)
Channels cross: Mono design without channels cross
Channels imbalance: < 0.01DB

Power Requirements:
1 Version 100-120V AC 50/60 Hz
2 Version 220-240V AC 50/60 Hz

Power Consumption: 300W static @230V (whole units)
Transformer Power: >2000W (6 transformers)
Package Weight: Approximately 85KG

Dimensions:
Amps : 340mm (W) x 260mm (H) x 450mm (D) (2 units) (MM, Fully Aluminium )
Regenerate power supply ：240mm (W) x 360mm (H) x 80mm (D) (2 units) (MM, Fully Aluminium )

Accessories:
Power cord X4 (We are strong recommend user buy a pair good and strong power cable for connect the unit)
DC power cable X2 (We don't recommend users built the replace cable)