CLASS H power amplifier

Hi,
I am building a class H power amp using 3 step supply transformer,
So highest supply is 160 volts DC ..

While i am giving maximum signal i am getting only 63volts rms dc @2ohm...
Where the all supply went?

On other hand i build an class AB amp i used an 130volts DC supply transformer.. and got 77 volts RMS output @2ohm.... isn't AB better than in output?


Kindly help ke out..what might be the wrong here ?