Pure Class A
A class A amplifier has the particularity of having all its active components always in conduction. They fully amplify the input signal, thus limiting the harmonic distortion on the output signal. The output signal of the Master-3A is therefore of excellent quality, due to the absence of this famous sinusoidal crossing distortion.
The Master 3A is a 50W pure class A power amp, therefore it’s temperature can reach 50°C. Strongly advised to place in open space with sufficient ventilation.
The Master 3A has 90W at 8 ohms, even with 90W full power output the THD+N is only 0.18% at 1KHz and 0.004% at 20KHz
“Linear Fidelity” Technology (Patent Pending)
The Master 3 output stages are using spectacular technology developed by Audio-GD in-house and is referred as “Linear Fidelity”. (patent pending) The output stages have zero negative feedback, which normally means increased and unwanted distortion.
Most power amp designs show increased distortion when the output level increases. The full frequency band’s distortion level increases even more, specially the low and high frequencies. The special Audio-GD “Linear Fidelity” technology can keep the distortion low and steady at all levels. This results in ultra linear performance.
The ultra low distortion of this non-negative feedback amplifier is achieved by its ultra linear behavior of the amplifier. This results in a very transparent and analogue sound stage.
- ACSS (XLR 4-PIN)
- 2 x Speaker (LEFT & RIGHT) Neutrik output IEC sockets.
Massive use of high power parts and robust power supply guarantee vigorous current output that drives most complex loudspeakers. Master-10 applies four channels of diamond non-feedback output stages composed of 24 pieces of ON Semiconductor transistors . The capacitance of the whole machine is over 140,000uF. Two enormous transformers are used with total power of 1500W as well as 2 R-Core transformers to power the pre-stages section
|Output power||2x90W @ 8 Ohm
2x180W @ 4 Ohm
2x 360W @ 2 Ohm
|Input sensitivity||XLR : 1.4V RMS
ACSS : 2mA RMS
|Outputs||Stereo speaker terminals|
|Supply voltage||220-240V AC 50/60Hz|
|Dimensions||48 x 44 x 19cm|
Eric Bartels (verified owner) –
I own the HE-1 MK2 pre amplifier and the Master 3A power amplifier and I can assure anyone this combi is hard to beat.
I did hear a lot of amplifiers like Hegel, Classe, Accuphase etc. but non of them can beat Audio-GD.
I use them in combination with a HiFi Rose RS150 streamer and Dali Epicon 6 speakers
Sounds like heaven!
Would be great if some hifi magazine would dare to test this brand compared to other well known high end brands.
Nuno Jardim (verified owner) –
After testing Pathos, Classe, Jef Rowland, etc I must say that Audio GD 3A is astonishing for the price, any price actually. Tigh, extend and full bass, very transparent midrange (enfase to voices , cords, piano and blow instruments) and suficientlly airy and resolving top end (a bit harsh at first but after a few days of burn in it]s all gone). Layering and insttruments separation is very good. Soundstage is 3D, texture and expansive, but coherent.
Very low distortion at high volumes and full boby in low ones.
My sistem is base on Michi P5 and S5 pre and power amplifier, respectly. Rigth now I subjectively perfer the carater of the Audio GD 3A Power Amp. What a dilema! This tell a lot!
Many thks for the fellows at Magna HiFi. Cheers!
Eric (verified owner) –
My Audio-GD Master 3 was recently exchanged for the new Master 3A and was helped to full satisfaction by Rob and Jos. Magna hifi is a top business that focuses on the lesser known high-end brands and ensures that they get the fame they deserve!