Can anyone plz give me the design of a high power opamp based amplifier, Vcc(100-200V, single power supply), Output current(tens of amperes)
The OPA541 may be about as close as you're going to get. It has the drive current but not the voltage you want.
It's not quite correct to say that the output stage of a Fender or Marshall tube amp is an op-amp. It is not. An op-amp is a DC coupled amplifier with immense gain. The output stage of the typical push-pull tube guitar amplifier is never DC coupled and has a voltage gain between input and output of perhaps 10 or 20. It has a very high power gain begin able to take a 2 volt signal at it's input and turn it into a 20 volt signal into an 8 ohm load.