Audio-GD - MASTER 3A - Balanced Class AB Power Amplifier (250W per channel @ 8 Ohm)
Master 3A is a pure Class A power amplifier. Designed without any compromises using the best components and fully discrete. Like all products of Audio-GD the amplifier is entirely made by hand and suggest that it is a much more expensive device. The analogue amplifier stages of this amplifier are non-feedback and DC coupled without any opamps, all discrete. The power supplies of this amplifier are fed by 4 transformers, 2 heavy toroidal per channel and 2 R-Core transformers.
| Marque: Audio-GD |
| Product Type: Amplificateurs de puissance |
Audio-GD Master 3A - Class AB
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 10 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 – Current Amplification
Audio-GD has developed an advanced current-driven amplifier technique. Also known as ACSS, Audio-GD Current System Signal. This special technique ensures that the signal travels a much shorter path and that ensures a more transparent, faster and more neutral reproduction. A similar technique is used by, for example, KRELL. The Current Conveyor technology mostly components are the current mirror. The Current Conveyor technology isn’t a new technology, at 1966 , professor K.C. Smith and A.S.Sedra publish the concept “current mode analogue circuits “ .
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Power Supply
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.
Output Power
Master 3A is almost 40kg and delivers 250W per channel @ 8 Ohm and 500W per channel @ 4 Ohm speakers. No wonder this magic piece of analogue amplifier sounds incredible good: Neutral, detailed, very good 3D staging and authority.
Non-Feedback Amp
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 .
SPECIFICATIONS
| SPECIFICATIONS | |
|---|---|
| Product type | Amplifier |
| Output power | 2x90W @ 8 Ohm 2x180W @ 4 Ohm 2x 360W @ 2 Ohm |
| SNR | > 110dB |
| Gain | +26dB |
| Input sensitivity | XLR : 1.4V RMS ACSS : 2mA RMS |
| Crosstalk | > -120dB |
| Inputs | 2x XLR 2x ACSS |
| Outputs | Stereo speaker terminals |
| GENERAL | |
|---|---|
| Supply voltage | 220-240V AC 50/60Hz |
| Consumption | 300W |
| Transformers power | 1600W |
| Housing material | Aluminum |
| Dimensions | 48 x 44 x 19cm |
| Weight | 40kg |
| Color | Black |
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WORLDWIDE SHIPPING
IN STOCK* = Immediately ready for shipping, delivery time 1-5 days within European Union.We aim to register your order with the carrier the same day.
* Some product options contain modifications. Shipping may then take 2 to 5 days longer.
Services and delivery options are automatically calculated at checkout.
We ship with UPS, Fedex, DPD, DHL. (You can specify a preferred shipper in order note**)
Customers outside European Union pay price excluding VAT (Custom fees maybe applicable)
** In some situations a preferred shipping company might involve additional costs. We will contact you in such case.
PAYMENT OPTIONS
We accept many payment methods, including major credit cards (Visa, MasterCard, Amex), PayPal and Apple Pay and many other’s.In some countries we support Klarna slice-it or 3 – instalments
When you would like to pay with credit card above 5000 EURO we make 2 or more instalments. (Contact us p
