900W H-class PA Amp with Limiter

28VAC/300VA

I wonder if these 6X28VAC / 300VA each can handle Stereo H900???

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Sir Mile i have 2 questions for u:
1: do 4 pairs at the output stage are enough to drive 4ohm load at full power keeping in mind that they are powered with 120vdc..no need for extras?
2: the swithching between 50v to 120v is fast enough with no distortion between switching?
Thank u...