|Q||Why should Class G/H technology be adopted?|
|Class G/H is currently the only practical, full range, high efficiency design that does not require sophisticated design and expensive parts.
Class G/H is an efficient way of turning the power supply up or down with the demand of the music. Below is an example of a Class A / B amplifier. As you can see the supply is at full voltage all the time. The output device must dissipate this extra voltage as heat into the heat sink. All this extra voltage limits the current each output can handle.
In a Class G/H amplifier the same output stage is being switch between a low voltage and high voltage supply. With this design the output device is kept closer to its full on state where it more efficient. In this way we can get almost twice as much power from each output.
|Q||What makes it better then Class A / B?|
|A Class G/H amplifier sounds exactly like a Class A / B because they use the same output stage. The difference in the power supply. A more complex supply allows us to get more power from a smaller heat sink.|
|Q||What makes it better then Class D?|
|A Class G/H has no need for all the added output filtering that a Class D requires. Class G/H will deliver better sound quality from the same size heat sink with similar efficiency.|
|Q||What is the down side compared to Class A / B?|
|Class G/H is in no way inferior to Class A / B. Class GH makes more power with less heat with fewer output devices. A class G/H amplifier may cost more then a class A/B amplifier of the same power, because of the complexity of the power supply. But it will be physically smaller and lighter.|
|Q||What is the down side compared to Class D?|
|Class G/H amplifiers are slightly less efficient then class D designs but only by a few percentage points.|
|Q||Break down the advantages of Class G/H.|
|Class G/H delivers the best points of Class A / B and Class D without many of the negative effects they can have.
1. Proven design with a very low failure rate.
2. Small size.
3. High power.
4. Low operating temperature.
5. Low noise floor.
6. Reduced RF interference.
7. High efficiently.