professional audio amplifier

There are two options for LA light weight professional audio amplifier. The first choice is CLASS H with 3 groups of voltage to drive the amplifier. The advantage of this kind of circuit is to make every penny for more power. But the restrictioin is, the efficiency of the amplifier will become lower than the second choice. Yes, for the second choice, you will have ONLY ONE voltage to drive the amplifier to save the energy for more power. However, for this kind of design, the