Thanks for the help. I dont HAVE to use opamps. But I must simulate the circuit to show a frequency response of 20Hz-18KHz, and a power delivered of 5W to an 8 Ohm load. And I knew that using transistors would be extremely difficult to do. So in my proposal, I decided I would use opamps/ic's. To simulate this program all I have is PSPICE which doesnt half work and Im not real proficient with it either. Does anyone have any ideas as to how to go through with the simulation?